the stydy aimes to Since the complex inunune mechanisms that mediate localinflammatory reaction in inflammatory bowel disease (illD) are poorlyunderstood, it was so intended to study the role of VCAM-I in patients withUC and to study also its relation with the severity of the disease.Forty individuals were included in this study to evaluate the role ofVCAM-I during activation of the course of Uc. The individuals wereclassified into two groups:Group I: comprised 30 patients with UC’ and with mean of age40.4±IO.5 years ...Group II: included 10 healthy individuals with mean age of41.9±8.7 years and taken as control groupPatients of this study were diagnosed on basis of clinical, radiological,endoscopic and histopathological findings -the selected patients weresubjected to:I-Clinical examination with history taking2-Stool analysis by simple sedimentation method3-Complete CBC.4-ESR.5- C-reactive protein.6- Colonoscopy and obtaining biopsy from presenting lesions forhistopathological examinations.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.? 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.