Inflammatory bowel diseaseAtypical forms of inflammatory bowel disease: microscopic colitis and pouchitisCruz-Correa, Marcia MD; Giardiello, Francis M. MD; Bayless, Theodore M. MD Author Information Division of Gastroenterology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States Correspondence to Francis M. Giardiello, MD, The Johns Hopkins Hospital, 1830 East Monument Street, Room 431, Baltimore, MD 21205, USA Current Opinion in Gastroenterology 16(4):p 343-348, July 2000. Buy Abstract Three atypical colitides (and enterides) are collagenous colitis, lymphocytic colitis, and ileal pouchitis. Collagenous and lymphocytic colitis are similar inflammatory bowel disorders of unknown cause with symptoms including chronic watery diarrhea, occurring in middle age. Pouchitis is the most significant long-term complication in patients with ileoanal pouch anastomosis. The clinical and histologic features and management of these entities are discussed. © 2000 Lippincott Williams & Wilkins, Inc.