Pouchitis is inflammation of the ileal pouch (an artificial rectum surgically created out of ileal gut tissue in patients who have undergone a colectomy), which is created in the management of patients with ulcerative colitis, indeterminate colitis, FAP, or, rarely, other colitides.
A variety of pathophysiological mechanisms have been proposed for pouchitis, but the precise pathogenesis (biological cause) remains unknown. A pilot study on the effect of reducing dietary FODMAP intake on bowel function in patients without a colon ran by Croagh C, Shepherd SJ, Berryman M, Muir JG, Gibson PR indicates there might be a relation between Pouchitis and FODMAP content of diets.
The incidence of a first episode of pouchitis at 1, 5 and 10 years post-operatively is 15%, 33% and 45% respectively.
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