title: Ileal loop stenosis: a late complication of urinary diversion.
abstract: Stenosis of the ileal conduit was a late complication in 12 patients (10 adults) who underwent urinary diversion by this means at our hospital. The duration of the ileal loop at diagnosis ranged from 4 to 14 years, averaging 9 years. Loop stenosis was generally without symptoms and was suggested only by routine excretory urography, while loopography confirmed the diagnosis. The etiology of the condition is not clear. A variety of possible factors is considered, including microvascular ischemia, urine-borne toxic material, infectious and allergic stimuli and an immunologic defect. The pathogenesis of the condition appears to be based upon a chronic inflammatory reaction, with progressive fibrosis in the mucosa and submucosa of the ileal segment.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003106:Colon / Q000601:surgery; D005260:Female; D006801:Humans; D007082:Ileum / Q000000981:diagnostic imaging / Q000601:surgery; D007410:Intestinal Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011859:Radiography; D014547:Urinary Diversion / Q000379:methods