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Molecular Characteristics of Mixed type Adenocarcinoma of the Stomach Masamichi Bamba 1 , Hiroyuki Sugihara 2 , Ryoji Kushima 3 , Takanori Hattori 2 1Department of Pathology, Saiseikai Shiga Hospital, Imperial Gift Foundation Inc., Ritto, Japan 2Division of Diagnostic Pathology, Shiga University Hospital, Ohtsu, Japan 3Department of Pathology, Shiga University of Medical Science, Ohtsu, Japan Keyword: 混在癌 , 未分化型胃癌 , 遺伝子異常 , 系譜解析 pp.1589-1596
Published Date 2007/10/25
DOI https://doi.org/10.11477/mf.1403101209
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 It has been reported that undifferentiated type gastric carcinoma derives partially from differentiated type gastric carcinoma with gastric phenotype. This process of dedifferentiation may form a mixed differentiated and undifferentiated type. However, the data of cytogenetic profile, genetic abnormalities of TP53 and alterations of E-cadherin/catenin complex support the notion that a mixed type can derive from the undifferentiated type as well as from the differentiated type. The former and the latter are characterized by the presence and absence, respectively, of intramucosal signet ring cells that differentiate regularly in a layered structure. The difference of derivation should be taken into consideration in clinical evaluation of a mixed type adenocarcinoma for therapeutic interventions.


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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