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Japanese

Actual Assessment of the Depth of Submucosal Invasion of PG(polypoid growth)type Protruded Colorectal T1 Carcinoma Yoichi Ajioka 1 , Hideaki Sugino 1 , Shuhei Kondo 1 , Takahiro Taguchi 1 , Masaya Iwata 1,2 1Division of Molecular and Diagnostic Pathology, Graduate School of Medical and Dental Science, Niigata University, Niigata, Japan 2Division of Gastroenterology, Kaetsu Hospital, Niigata, Japan Keyword: PG/NPG分類 , 隆起型 , 大腸T1癌 , SM浸潤度 , 残存粘膜内病変 pp.933-937
Published Date 2019/5/25
DOI https://doi.org/10.11477/mf.1403201770
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 In PG-type protruded colorectal T1 carcinoma, the residual intramucosal part of the tumor is usually present, even without possible identification of the muscularis mucosae at the site of submucosal invasion. The average width of the residual intramucosal part is estimated to be 1,200〜1,300μm, indicating that the width of the residual intramucosal part might be included in the depth of submucosal invasion assessed according to the present rules. For the clinical assessment of the depth of submucosal invasion of protruded T1 colorectal carcinoma, it is useful to determine whether the tumor is PG type by focusing on the periphery of the tumor, as most PG-type protruded colorectal T1 carcinomas have a protruding residual intramucosal part at the periphery.


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

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