DOP29 The Normalization and Transition of J-Pouch Phenotype in the Chicago Classification of Pouchitis

Background Pouchitis can develop in up to 70% of patients with inflammatory bowel disease (IBD) treated by proctocolectomy with ileal pouch-anal anastomosis (IPAA). In our recent work, we proposed the “Chicago classification of pouchitis” describing 7 main pouch phenotypes with differing outcomes. In this study, we assessed the transition of pouch phenotypes in our classification. Methods This is a retrospective study of IBD patients with IPAA...