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Sessile Serrated Adenoma/Polyp with Traditional Serrated Adenoma, Report of a Case Mineo Iwatate 1 , Yasushi Sano 1 , Santa Hattori 1 , Wataru Sano 1 , Noriaki Hasuike 1 , Akihiro Ichiyanagi 1 , Yoshihiko Kanagawa 1 , Taro Ikumoto 2 , Masahito Kotaka 2 , Takahiro Fujimori 3 1Endoscopy Division, Gastrointestinal Center, Sano Hospital, Kobe, Japan 2Surgery Division, Gastrointestinal Center, Sano Hospital, Kobe, Japan 3Department of Molecular and Surgical Pathology, Dokkyo Medical University of Medicine, Tochigi, Japan Keyword: SSA/P , serrated adenoma , tubular adenoma , NBI , 癌化経路 pp.475-481
Published Date 2011/4/25
DOI https://doi.org/10.11477/mf.1403102187
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 A 76-year old male performed colonoscopy before surgery for advanced ascending and sigmoid cancer. A slightly elevated lesion with two nodules whose size was 10mm was detected and diagnosed as hyperplastic lesion. In 1year after surgery, the lesion size increased up to 20mm. Finally we diagnosed the lesion as sessile serrated adenoma with serrated adenoma or tubular adenoma, we performed en block resection using ESD technique. Histopathological diagnosis was as follow, SSA/P for slightly elevated lesion, serrated adenoma for anal nodule and tubular adenoma for oral nodule. Some reports have also supported serrated adenoma or tubular adenoma occurred within SSA/P located left side of colon. We assumed that serrated or tubular adenoma occurred in SSA/P located left side of colon will develop carcinoma in contrast to SSA/P located right side of colon in which carcinoma occurred as de novo pathway.


Copyright © 2011, 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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