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Colonic Adenoma Evolving into Early Cancer, Report of a Case Kunio Nagata 1 , Rintaro Narisawa 1 , Junichi Ueki 1 , Mineo Tomizawa 1 , Hidenobu Watanabe 2 1The Third Department of Internal Medicine 2The First Department of Pathology, Niigata University School of Medicine pp.192-196
Published Date 1989/2/25
DOI https://doi.org/10.11477/mf.1403106397
  • Abstract
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 A 79-year-old man visited our hospital because of abdominal disconfort and constipation in December 1981. Barium enema and colonoscopic examinations revealed three sessile polyps, 2-3 mm in size, each of these being in the ascending, transverse, and sigmoid colon. These polyps were diagnosed histologically as tubular adenoma on biopsy specimen.

 In October 1985, follow-up colonoscopy showed that the polyp in the ascending colon remained the same in size, but that the other two polyps in the transverse and sigmoid colon grew and became sub- or pedunculated form, 6, 7 mm in size. Among these enlarged polyps, one in the transverse colon was diagnosed histologically as tubular adenoma, but the other in the sigmoid colon was diagnosed as carcinoma in adenoma on polypectomy specimen.

 We thought that the carcinoma arose from the adenoma through malignant change.


Copyright © 1989, 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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