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Histopathologic Risk Factors for Lymph Node Metastasis of Submucosal Invasive Colorectal Carcinoma Yoko Tateishi 1 , Hirokazu Taniguchi 1 , Yukihiro Nakanishi 2 , Tadakazu Shimoda 1 1Clinical Laboratory Division, National Cancer Center Hospital, Tokyo 2Pathology Division, National Cancer Center Research Institute, Tokyo Keyword: 大腸sm癌 , 深達度 , リンパ節転移 pp.1233-1240
Published Date 2006/8/25
DOI https://doi.org/10.11477/mf.1403100639
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 In grading submucosal invasive colorectal carcinomas based on the depth of submucosal invasion, problems can be encountered in identifying the muscularis mucosae when it is complicated, has been obscured or has even disappeared completely because of the infiltration of cancer cells.

 We measured the depth of submucosal invasion in 329 cases of submucosal invasive colorectal carcinomas using 5 methods and then evaluated each of the methods.

 The lesions with over 1,000μm submucosal invasion have more frequent lymph node metastases than less invasive lesions, when we measured the depth of submucosal invasion from either the lower edge of the muscularis mucosae or the surface of the tumor using the criteria of the general rules for clinical and pathological studies on cancer of the colon, rectum and anus.

 The risk factors for lymph node metastasis were histological grade (moderately to poorly differentiation), lymphatic invasion and tumor budding. In addition, intramucosal growth type (PG/NPG) and status of the muscularis mucosae (A1・A2/B1・B2) also were risk factors.


Copyright © 2006, 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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