Ⅱa-aggregated Polypoid Type of Poorly Differentiated Adenocarcinoma in the Gastric Mucosa, Report of a Case Hiroyuki Maguchi 1 , Yutaka Orii 1 , Yuusuke Saitoh 2 , Masayoshi Namiki 2 , Tadakazu Shimoda 3 1Division of Gastroenterology, Asahikawa Kosei Hospital 2The Third Department of Internal Medicine, Asahikawa Medical College 3The Department of Pathlogy (Ⅱ), Jikei Medical College Keyword: Ⅱa集簇型胃癌 , 腺窩上皮胃型異型上皮 , 腺窩上皮胃型癌 pp.209-215
Published Date 1991/2/25
DOI https://doi.org/10.11477/mf.1403102463
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 A 70-year-old woman was admitted to our hospital for further examination of an abnormality of the stomach detected by health check-up. The roentgenogram and endoscopy showed Ⅱa-aggregated polypoid lesion in the anterior wall of the antrum.

 The preoperative biopsy showed foveolar-like atypical epithelium in the superficial layer of the mucosa and signet-ring cell carcinoma in the deeper layer. Based on these preoperative pathological diagnoses, gastrectomy was performed.

 Histological examination of the resected stomach showed nodules of various sizes aggregated in an area,85×65 mm, of the anterior wall of the antrum. These lesions turned out to be Ⅱa-aggregated type early gastric carcinoma. Elevated portions consisted of two components: well differentiated adenocarcinoma resembling to foveolar epithelium in the surface layer, and signet-ring cell carcinoma and poorly differentiated adenocarcinoma in the middle and deep layer. The transition of these two components occurred gradually and continuously.

Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.


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