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Pouch ileitis in excluded reservoir: an unusual complication of restorative proctocolectomy for ulcerative colitis.

One case of pouch ileitis after restorative proctocolectomy for ulcerative colitis is described. Diagnosis was made by endoscopy, histology and electron microscopy. The most prominent feature was intense inflammation of the mucosa and submucosa, with atrophy of the villi, and colonic metaplasia, occurring before closure of the loop ileostomy. The patient improved after a course of metronidazole therapy, but ileostomy closure was postponed. It appears that the ileum mucosa of patients with ulcerative colitis is highly prone to the development of inflammation and careful, regular follow-up is recommended.