1. Serrated polyps in patients with ulcerative colitis: Unique clinicopathological and biological characteristics.
- Author
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Nishio, Masafumi, Kunisaki, Reiko, Shibata, Wataru, Ajioka, Yoichi, Hirasawa, Kingo, Takase, Akiko, Chiba, Sawako, Inayama, Yoshiaki, Ueda, Wataru, Okawa, Kiyotaka, Otake, Haruka, Ogashiwa, Tsuyoshi, Kinoshita, Hiroto, Saigusa, Yusuke, Kimura, Hideaki, Kato, Jun, and Maeda, Shin
- Subjects
ULCERATIVE colitis ,INFLAMMATORY bowel diseases ,POLYPS ,CLINICAL pathology - Abstract
Background: Serrated polyps have recently been reported in patients with ulcerative colitis (UC); however, their prevalence and detailed characteristics remain unclear. Methods: The prevalence and clinicopathological and biological characteristics of serrated polyps in patients with UC were retrospectively examined in a single tertiary inflammatory bowel disease center in Japan from 2000 to 2020. Results: Among 2035 patients with UC who underwent total colonoscopy, 252 neoplasms, including 36 serrated polyps (26 in colitis-affected segments, 10 in colitis-unaffected segments), were identified in 187 patients with UC. The proportion of serrated polyps was 1.8% (36/2035). Serrated polyps in colitis-affected segments were common with extensive colitis (88%), history of persistent active colitis (58%), and long UC duration (12.1 years). Serrated polyps in colitis-affected segments were more common in men (88%). Of the 26 serrated polyps in colitis-affected segments, 15, 6, and 5 were categorized as sessile serrated lesion-like dysplasia, traditional serrated adenoma-like dysplasia, and serrated dysplasia not otherwise specified, respectively. Sessile serrated lesion-like dysplasia was common in the proximal colon (67%) and with BRAF mutation (62%), whereas traditional serrated adenoma-like dysplasia and serrated dysplasia not otherwise specified were common in the distal colon (100% and 80%, respectively) and with KRAS mutations (100% and 75%, respectively). Conclusions: Serrated polyps comprised 14% of the neoplasias in patients with UC. Serrated polyps in colitis-affected segments were common in men with extensive and longstanding colitis, suggesting chronic inflammation in the development of serrated polyps in patients with UC. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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