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Pathological Study of Initial Lesions of Linitis Plastica Type Gastric Cancer Nobuaki Nishimata 1,2 , Hiroshi Tanabe 1,2 , Keisuke Ikeda 1,2 , Akinori Iwashita 1 , Seiji Haraoka 1 , Kaname Oshige 1,2 , Atsuko Ota 1,3 , Takashi Nagahama 2 , Yasuhiro Takaki 2 , Toshiyuki Matsui 2 , Kitaro Futami 3 1Department of Pathology, Fukuoka University Chikushi Hospital, Chikushino, Japan 2Department of Gastroenterology, Fukuoka University Chikushi Hospital, Chikushino, Japan 3Department of Surgery, Fukuoka University Chikushi Hospital, Chikushino, Japan Keyword: linitis plastica型胃癌 , 初期病変 , 粘膜内線維化 , 背景粘膜 , TGF-β pp.765-774
Published Date 2008/4/25
DOI https://doi.org/10.11477/mf.1403101363

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 Using 136 undifferentiated type early gastric cancers (m:78 cases and sm:58 cases) of Ⅱc and Ⅱb lesion that had developed in the fundic gland mucosa, we investigated the histochemical and immunohistochemical background mucosa of cancer, the intramucosal size of cancer and its accompanying ulcerarion. We also discussed the pre-stage of so-called pre-linitis plastica type gastric cancer.

 The results were as follows; (1) Histochemically, the more mild the degree of the atrophy of the background mucosa was, the smaller the tumor size was, and the smaller the tumor size was, the lower the rate of its accompanying ulceration became. (2) In the total of 136 cases, intramucosal fibrosis was recognized only in 3 cases of mucosal cancer and 1 case of submucosal cancer. In the sm case, the submucosal invasion area was wider than that of the intramucosal invasion area so this case corresponds with so-called pre-linitis plastica type gastric cancer. (3) In the early gastric cancers without accompanying ulceration (m:17 cases and sm:17 cases), only one mucosal cancer case, which showed fibrosis in the area of the carcinoma, was immunohistochemically positive for TGF-β.

 Conclusion;Intramucosal development of undifferentiated type cancer that has developed in the fundic gland mucosa depends upon the degree of mucosal atrophy of the surrounding area of the cancer lesion, and some cases with intramucosal fibrosis of gastric cancer were considered to be the initial stages of so-called linitis plastica-type gastric cancer.


Copyright © 2008, 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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