title: CT findings in the perirectal area following radiation therapy.
abstract: The perirectal computed tomography findings of 26 patients who had received radiation therapy for pelvic malignancies are described. They include a widening of the presacral space, increase in the perirectal fat, thickening of the perirectal fibrous tissue, and visualization of a fibrotic connection between the sacrum and rectum. The etiology of these findings is discussed, as well as the differential diagnosis.
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D003974:Diatrizoate Meglumine; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000532:radiotherapy*; D012007:Rectum / Q000000981:diagnostic imaging / Q000528:radiation effects*; D014057:Tomography, X-Ray Computed; D001743:Urinary Bladder / Q000528:radiation effects
chemical_list: D003974:Diatrizoate Meglumine