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Early Poorly Differentiated Adenocarcinoma of the Rectum, Report of a Case Shinji Yoshii 1 , Saori Ishigaki 1 , Junichi Kodaira 1 , Satoshi Okahara 1 , Hiroyuki Okuda 2 , Takeshi Matsumoto 1 , Hiroaki Takahashi 1 , Kaku Hokari 1 , Hiroyuki Tsukagoshi 1 , Takaya Kusumi 3 , Masao Hosokawa 3 , Masahiro Fujita 4 , Toshihiro Sato 4 , Tadahiro Sato 5 1Department of Gastroenterology, Keiyukai Sapporo Hospital, Sapporo, Japan 2Department of Medical Oncology, Keiyukai Sapporo Hospital, Sapporo, Japan 3Department of Surgery, Keiyukai Sapporo Hospital, Sapporo, Japan 4Keiyukai Institute of Clinical Pathology, Sapporo, Japan 5Sato Clinic, Kucchan, Japan Keyword: 低分化腺癌 , 生検 , 線維化 , 大腸癌 , pit pattern pp.1284-1292
Published Date 2012/7/25
DOI https://doi.org/10.11477/mf.1403113553
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 A 70-year-old woman visited our hospital and was found by colonoscopy to have a type 0-IIa+IIc lesion in the lower rectum with converging folds. In magnifying endoscopy, the depressed areas were observed as irregular pit and dot-like pit patterns. We diagnosed this lesion as a massive submucosal invasive cancer. Low anterior resection was performed. Histological findings showed well differentiated and poorly differentiated adenocarcinoma. The depth of most of the area was intramucosal invasion, but, in one area, it had invaded into the submucosal layer(only 350μm)with lymphatic invasion. It is an interesting case in histogenesis and diagnosis of poorly differentiated adenocarcinoma of the colon and rectum.


Copyright © 2012, 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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