title: Localized giant pseudopolyposis of the colon in ulcerative colitis.
abstract: Recently a patient with ulcerative colitis developed abdominal pain and a left upper quadrant mass. A 67Ga-citrate scintiscan showed increased activity over the mass. A barium enema demonstrated retrograde obstruction at the splenic flexure and intraluminal multilobulated tissue masses. The total abdominal colectomy specimen showed localized giant pseudopolyposis at the splenic flexure. This condition is a rare local complication of both ulcerative and granulomatous colitis. It resembles a villous adenoma on barium enema and, although inflammatory, may simulate a colonic carcinoma. When symptomatic, local resection may be sufficient treatment.
mesh_terms: D000328:Adult; D003093:Colitis, Ulcerative / Q000150:complications*; D003937:Diagnosis, Differential; D006801:Humans; D007414:Intestinal Neoplasms / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D007417:Intestinal Polyps / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D008297:Male; D011859:Radiography