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Endoscopic Findings of Serrated Lesions in the Colorectum Nana Hayashi 1 , Shinji Tanaka 1 , Shinji Nagata 2 , Daiki Hirano 3 , Kyoku Sumimoto 3 , Yuzuru Tamaru 3 , Yuki Ninomiya 3 , Kenjiro Shigita 3 , Naoki Asayama 3 , Shiro Oka 1 , Kazuaki Chayama 3 , Fumio Shimamoto 4 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Endoscopy, Hiroshima City Asa Citizens Hospital, Hiroshima, Japan 3Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan 4Department of Health Sciences, Prefectural University of Hiroshima, Hiroshima, Japan Keyword: 鋸歯状病変 , HP , SSA/P , TSA pp.1657-1666
Published Date 2015/12/25
DOI https://doi.org/10.11477/mf.1403200490
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 Serrated lesions in the colorectum are classified into HP(hyperplastic polyp), SSA/P(sessile serrated adenoma/polyp), TSA(traditional serrated adenoma), and SSA/P with cytological dysplasia. In this report, we reviewed the endoscopic findings of HP, SSA/P, and TSA. We found that the characteristics of HP were similar to those of SSA/P ; however, SSA/P showed larger size, more frequent localization in the proximal colon, more mucin secretion on the lesion surface, and higher prevalence of open type pit pattern than did HP. In contrast, most TSAs showed localization in the distal colon, protruded appearance, and IIIH or IVH pit patterns. It is important to conduct a detailed observation using magnifying endoscopy for a local protruded area in SSA/P, because such areas have a potential for deep submucosal invasion.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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