PMID: 9192067Mar 1, 1997Paper

Ileal pouches: adaptation and inflammation

Baillière's Clinical Gastroenterology
M N Merrett

Abstract

Ileal pouch-anal anastomosis (IPAA) has become the operation of choice following proctocolectomy for ulcerative colitis (UC) and familial adenomatous polyposis. Functioning ileal pouch mucosa undergoes histological changes resembling the colon (colonic metaplasia). The possible role of stasis and luminal factors--bile acids, short-chain fatty acids and bacteria--are discussed. It seems likely that colonic metaplasia is an adaptive response to the new luminal environment in IPAA. Inflammation in the ileal reservoir ('pouchitis') is the most significant late complication in IPAA. It occurs in 20-30% of patients and is virtually confined to those with prior UC. The clinical picture in pouchitis is highly variable; however, it can be easily categorized into three groups. Nevertheless, in most cases it is likely to represent recurrent UC in the ileal pouch. Current treatments and possible preventative strategies for pouchitis have been outlined.

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Apr 27, 2000·The Journal of Surgical Research·K O ShebaniJ M Becker
Aug 21, 2009·The Journal of Surgical Research·Arthur F StucchiJames M Becker
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