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Features of Lymphnode Metastasis Cases of Early Gastric Cancer―"SM 1" as Their Degree and "Well-Differentiated Cancer" as Their Histology Junko Fujisaki 1 , Yorimasa Yamamoto 2 , Yo Kato 3 , Makoto Tatewaki 2 , Susumu Sawada 2 , Tomohiro Tsuchida 2 , Akiyoshi Ishiyama 2 , Etsuo Hoshino 2 , Hiroshi Takahashi 2 1Endoscopy Division, Cancer Institute Hospital, Tokyo 2Gastrointestinal Center, Cancer Institute Hospital, Tokyo 3Pathology Division, Cancer Institute Hospital, Tokyo Keyword: 早期胃癌 , SM1癌 , リンパ節転移 pp.14-24
Published Date 2007/1/25
DOI https://doi.org/10.11477/mf.1403100380

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 We studied lymphnode metastatic early gastric cancer cases which were well differentiated adenocarcinomas whose depth was SM1. There were 556 submucosal invasive cases, among which 3.8% of SM1 cases were lymphnode metastatic and 12% of SM2 cases were well-differentiated adenocarcinoma. We divided the well-differentiated adenocarcinoma into two types, size. (1) purely well-differentiated type and (2) partially well-differentiated type with the major component being well-differentiated and the minor component being poorly differentiated. There were 4 metastatic cases among the SM1 and well-differentiated group (1). All the lymphnode metastatic cases were from the mixed type (2). Three out of four (75%) of the cases had ulcer scar in their lesion and also had lymphatic permeation. All of these three cases were well differentiated adenocarcinoma at their submucosal invasive point. Half of the four metastatic cases were gastric type in mucous differentiation.


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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