Epidemiology Of Urinary Tract Infections In The Neonates In Zagazig University NICU

AbstractThe diagnosis of cancer prostate is based mostly on the results of ultrasonography (US)- guided transrectal biopsy. Because of the low accuracy of US for cancer prostate detection and localization, a random biopsy is usually performed. However, it has several disadvantages. For example, it may lead to an increase in complications because of the unnecessary sampling of normal prostate tissue. Moreover, cancer located outside the routine biopsy site may be missed. In addition, there may be difficulty in determining the site of a previous biopsy when repeating biopsy in a patient with a previous negative result and continuously high prostate-specific antigen levels. For these reasons, an imaging modality is needed that allows the accurate detection and localization of cancer prostate , as well as local staging, guidance of biopsy, and adequate follow- up after treatment.Although T2-weighted MR imaging has been used widely for the pretreatment work-up of cancer prostate on the basis of its excellent soft tissue resolution, but its accuracy for the detection and localization of cancer prostate is unsatisfactory as T2-weighted imaging has significant limitations for depicting cancer in the transitional and central zones, because cancer and normal tissues both have low signal intensity on T2-weighted images. In addition, low signal intensity may be seen in the peripheral zone on T2-weighted images in the presence of many noncancerous abnormal conditions, such as nonspecific inflammation, biopsy related hemorrhage, post–radiation therapy fibrosis, and changes after hormone deprivation therapy.