Journal of gastroenterology · 2025
Prevalence and predictability of the Chicago Classification of Pouchitis in ulcerative colitis: a multicenter study in Japan.
СтатьяМногоцентровое исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Akiyama Shintaro, Hayashi Ryohei, Takasago Takeshi, Kusunoki Kurando, Ikeuchi Hiroki, Takenaka Kento, Watanabe Kazuhiro, Koganei Kazutaka, Ueno Nobuhiro, Fujiya Mikihiro, Hosoe Naoki, Koyama Fumikazu, Sakata Yasuhisa, Esaki Motohiro, Takeuchi Ken, Naganuma Makoto, Tsuchiya Kiichiro
Аннотация
BACKGROUND: Endoscopic phenotypes of pouchitis according to the Chicago Classification have been reported to be associated with poor pouch outcomes in ulcerative colitis (UC). Here, we aimed to assess the prevalence of endoscopic phenotypes and their predictability for pouch outcomes.
METHODS: This retrospective multicenter study included UC patients aged 18 years or older who underwent total colectomy between January 2000 and March 2020. The primary endpoints were frequencies of endoscopic phenotypes of the Chicago Classification and their predictability for chronic pouchitis and pouch failure. Endoscopic findings were evaluated at the initial pouchoscopy and at 3 and 10 years after ileostomy takedown.
RESULTS: A total of 392 eligible patients were identified. The frequencies of chronic pouchitis and pouch failure were 32% and 4.9%, respectively. Focal inflammation and inlet involvement at the initial postoperative pouchoscopy were significantly associated with subsequent risk of chronic pouchitis and pouch failure, respectively. Thirty percent of the patients with focal inflammation progressed to diffuse inflammation when chronic pouchitis developed. Multivariate analysis showed chronic pouchitis was significantly associated with diffuse inflammation and cuffitis observed throughout the clinical course. The proportion of pouch-related fistula was significantly lower in our cohort than in the US cohort (4.8% vs 19%, P < 0.001), and pouch-related fistula was an independent risk factor for pouch failure.
CONCLUSIONS: We demonstrated the predictability of the Chicago Classification for pouch outcomes, and a lower prevalence of pouch-related fistula, resulting in a lower pouch failure risk in our multicenter cohort.
METHODS: This retrospective multicenter study included UC patients aged 18 years or older who underwent total colectomy between January 2000 and March 2020. The primary endpoints were frequencies of endoscopic phenotypes of the Chicago Classification and their predictability for chronic pouchitis and pouch failure. Endoscopic findings were evaluated at the initial pouchoscopy and at 3 and 10 years after ileostomy takedown.
RESULTS: A total of 392 eligible patients were identified. The frequencies of chronic pouchitis and pouch failure were 32% and 4.9%, respectively. Focal inflammation and inlet involvement at the initial postoperative pouchoscopy were significantly associated with subsequent risk of chronic pouchitis and pouch failure, respectively. Thirty percent of the patients with focal inflammation progressed to diffuse inflammation when chronic pouchitis developed. Multivariate analysis showed chronic pouchitis was significantly associated with diffuse inflammation and cuffitis observed throughout the clinical course. The proportion of pouch-related fistula was significantly lower in our cohort than in the US cohort (4.8% vs 19%, P < 0.001), and pouch-related fistula was an independent risk factor for pouch failure.
CONCLUSIONS: We demonstrated the predictability of the Chicago Classification for pouch outcomes, and a lower prevalence of pouch-related fistula, resulting in a lower pouch failure risk in our multicenter cohort.