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Endoscopic Diagnosis of Colorectal Serrated Adenoma Shiro Oka 1 , Shinji Tanaka 1 , Toru Kawamura 1 , Mayuko Hirata 2 , Iwao Kaneko 2 , Ritsuo Mouri 2 , Hiroyuki Kanao 2 , Kei Shinagawa 1 , Shigeto Yoshida 1 , Toru Hiyama 3 , Masaharu Yoshihara 3 , Kazuaki Chayama 2 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Gastroenterology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan 3Health Service Center, Hiroshima University, Hiroshima, Japan Keyword: 鋸歯状腺腫 , 内視鏡診断 , 肉眼型 , pit pattern , NBI pp.312-320
Published Date 2007/3/25
DOI https://doi.org/10.11477/mf.1403100969
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 We assessed endoscopic findings for diagnosis of colorectal serrated adenoma (SA). SAs were divided into two types based on their macroscopic appearance: polypoid and superficial. Superficial SAs tended to be white like the adjacent non-neoplastic mucosa. Granulonodular and lobular appearance was significantly more common for polypoid SAs than for superficial SAs. The pit patterns of all SAs were classified into 3 types : type II only, mixed type (type II only, mixed IIIL or IV), type IIIL or IV only. All superficial SAs exhibited the type II pit pattern. With NBI magnification, invisible capillaries were found in superficial SAs. We conclude that polypoid and superficial SAs present different endoscopic findings. However, using colonoscopic observation, it is difficult to distinguish most small, superficial SAs from hyperplastic lesions.


Copyright © 2007, Igaku-Shoin Ltd. All rights reserved.

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

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