Puberty is a critical human development process that leads to sexual maturation and reproductive capability. It requires an intact hypothalamic pituitary gonadal axis (HPG). Any disruption of this axis can result in temporary or permanent disorders of reproductive endocrine function. The HPG axis is active during fetal development and continues to function in infancy until it enters a relative quiescent state. Pubertal onset is heralded by the re-emergence of the pulsatile secretion of hypothalamic GnRH. GnRH stimulates gonadotropin in the anterior pituitary gland to secret lutenizing hormone and follicle stimulating hormone that in turn bind to ligand specific receptors in the gonads , causing gonadal maturation and production of sex steroids, most notably testosterone and esradiol . This process is termed gonadarche. Testosterone and estradiol together with inhibin, activin and others regulate the subsequent activity of the hypothalamus and pituitary gland.Puberty is a dynamic period of physical growth, sexual maturation and psychosocial achievement that generally begins in boys between 9-14 years. The factors that regulate the onset of puberty remain elusive. Certainly, environmental and metabolic factors are critical regulators of HPG axis and the timing of puberty, but their influence on puberty is dependant on significant genetic control. Gene GPR54 appears to be a signal for the beginning of puberty in human beings. Leptin plays an important role in signaling nutritional status to the central reproductive axis and appears to be at least a permissive factor in the initiation of puberty. Combination of these factors lead to the pulsatile secretion of GnRH. Mutation in GPR54 in human causes hypogonadotropic hypogonadism, pubertal delay and sexual infantilism that can be corrected by administration of exogenous GnRH in pulsatile manner.The standard clinical system for describing normal pubertal development and its variations is the five stage system (Tanner staging). The Tanner stages of puberty are based on the development of the genitalia and pubic hair distribution.Testicular enlargement and increase in scrotal folds and pigmentation are the first clear signs of true puberty in boys. The onset of testicular enlargement occurs at age of 9.5- 13.5 year, then development of secondary sexual characters. Adrenarche is the puberty of the adrenal gland, the phenotypic result of adrenarche is pubarche or the development of axillary’s and pubic hair that appears in boys at about age 8 years. The phenomenon of adrenarche is unique to human beings.In laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionIn laryngeal expansion surgery for subglottic and tracheal stenosis, after vertically dividing the stenotic segment in the midline and insertion of graft material between the divided segments, either prolonged stenting with tracheostomy (4-6 weeks) or short-term stenting using endotracheal tube with sedation or mechanical ventilation (1-2 weeks) is required until the airway is stabilized. The postoperative period is far more difficult and requires meticulous skillful care. This experimental study was designed to explore the use of microplates and auricular cartilage graft in providing immediate airway stability and to determine the surgical outcome of this procedure. Subglottic stenosis was ceriated in 11 dogs using repeated abrasive technique to the mucosa and perichondrium. All 11 dogs underwent laryngotracheal reconstruction without intraoperative complications. Immediately after reconstruction, the airway diameter returned to the prestenotic diameter and was maintained till the end of this study 6 weeks postoperatively as measured by endotracheal tube sizing. Histological examination revealed complete epithelization over all the grafted regions except at small areas with minimal granulations in 4 dogs. Viable grafts were identified in 8 cases and 3 cases with insignificant necrosis. This study suggests that rigid distraction of the stenotic airway with microplates and auricular cartilage graft has a good surgical outcome. Allowing repair of the stenosis without stenting or tracheostomy and provides immediate airway stability.ConclusionIn conclusion, the technique of using external fixation with microplates to provide immediate rigid external support and auricular cartilage graft promise to be very helpful in maintaining distraction of the divided anterior cricoid and upper tracheal segments obviating the need for tracheostomy or prolonged stenting.The auricular cartilage is a useful grafting material for LTR because it closely resembles the strength and width of the tracheal cartilage and can be used effectively for a grade I or II stenosis. It has the advantage of having minimal donor site morbidity the auricular cartilage graft-in laryngotracheal reconstruction is more successful than the anterior cricoid split operation treating mild to moderate SGS we have had limited success with ACGs in grade III stenosis and are reluctant to use them in grade IV stenosis, staged reconstruction long-segment SGS, long-segment tracheal stenosis, or revision of a failed auricular or costal cartilage LTR.Summary and ConclusionSummary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.? US are modalities of choice for the initial imaging of the abdomen and pelvis in children, the technique is non-invasive and? most children can be examined without sedation. The lack of exposure to radiation is important and examination can be repeated at frequent interval if required.? Sensitivity in the detection of different groups of lymph node enlargement is definitely higher using CT (100%) than US (70%).? Regarding accuracy in the evaluation of extranodal lymphoma CT was better than US with a sensitivity of (95%) and specificity of (90.9%). CT in addition to visualizing lymph node enlargement, offer more information about the extent of the lesion with involvement of the intra-abdominal nodes and extranodal organs.? On gastrointestinal lymphoma US can be used as an initial approach whenever there is a clinical suspicion of the intestinal lymphoma. However, the US demonstration of the small bowel loops may be obscured by over lying air in the adjacent loops, there fore, negative US findings cannot excluded the diagnosis of intestinal lymphoma, with a sensitivity of (55.6%) and specificity of (71.4%).? Regarding gastrointestinal lymphoma CT has been proven to be more sensitive than US in revealing bowel wall thickening with sensitivity of (100%), so CT must be performed for staging of the disease and assessment of the extension of the mass.Summary and ConclusionThis study included 30 patients, they were 20 males and 10 females and their age ranged from 1 year to 15 years old.Detailed personal history was taken, full clinical examination and laboratory investigation were performed prior imaging.Abdominal distention was the most common presentation seen in 53.3% of cases.Ultrasonography and abdominal computed tomograhpy were performed in all cases.NHL accounts for about 63.3% of cases and HD for about 36.7% of cases.The results of these diagnostic modalities were recorded, analyzed and compared to the final diagnosis. Which was based on clinical follow up and histopathological findings.From the study we can conclude the following points:? HD and NHL may involve any organ or organ system where lymphoid tissue is found.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.Summary and conclusionThe aim of this study is to assess the accuracy of magnetic resonance imaging versus computed tomography in diagnosis of nasopharyngeal mass.This study was done during the period from June 2002 to December 2003 in Radiology Departments, Zagazig University Hospitals. The study included 30 patients, 19 males and 11 females, their ages ranged from 5 to 69 years.The patients were subjected to:1- Clinical examination.2- CT scanning.3- MRI4- Histopathological analysis.The lesions encountered in our study were classified into 22 malignant lesions and 8 of benign nature.The malignant lesions were further subdivided into tumors arised from the nasopharynx itself, they were squamous cell carcinoma in 12 patients, lymphoma in 8 patients, and malignant tumors extended to the nasopharynx in the form of chordoma and carcinoma of the maxillary sinus.Eight patients with benign lesions were included in our series, further subdivided into 6 cases arised from the nasopharynx, they were 3 cases of angiofibroma, 3 cases of adenoids, or direct extension from adjacent structures in two cases, one case of nasal angiofibroma and the other was pleomorphic adenoma of the deep part of the parotid gland.Both CT and MRI were done for all our patients, CT was effective in the determination of the lesion, extension, other close association, the bone destruction and abnormal calcifications inside the tumor, however CT failed to distinguish between the tumor itself and the surrounding soft tissue structures.MRI is a sensitive technique in good differentiation between the tumor itself and the surrounding structures, the extension and the obliteration of the surrounding spaces, MRI has also good advantages of determination of the intracranial extension.In conclusion:The Computed Tomography is effective in imaging of the nasopharyngeal lesions as if they are primarily arise from or as an extension from the parapharyngeal structures. It also provides a good details about the nature of the lesion, density, extension and other association and presence of calcifications or bone destruction, which is deficient in MR imaging.The advantages of MR imaging with its superior soft tissue contrast resolution, absence of bone hardening artifacts, and ability to image in multiplanner fashion has allowed to image the deep fascial structures as well as the distinction between the tumor and the surrounding soft tissue is easier than that of computed tomography.So both CT and MRI are well-established methods in diagnosing diseases of the nasopharynx and its surrounding.The recommended diagnostic strategy for mass lesions of the nasopharynx and surrounding structures is to use Gd-enhanced MRI as a primary study and contrast enhanced CT as a secondary study for the evaluation of fine bony details.