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Detection and Importance of Colonic Diminutive Lesions (5 mm or less in diameter) Heiji Okamoto 1 , Tetsuji Sasaki 2 1Department of Endoscopy, School of Medicine, Tokai University Tokyo Hospital 2Department of Surgery, School of Medicine, Tokai University Tokyo Hospital Keyword: 小さな表面型大腸癌 , 微小大腸癌 , 微小大腸病変 , 内視鏡的形態分類 pp.813-818
Published Date 1990/7/25
DOI https://doi.org/10.11477/mf.1403111060

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  • Abstract
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 Six thousand polyps were removed endoscopically during the past eight years. According to their shape, in addition to endoscopic findings diminutive polyps were divided into four groups (subpedunculated, sessile, superficial and depressed type). A total number of 3,435 diminutive polyps (5 mm or less in diameter) out of these 6,000 were examined histopathologically and morphologically. Neoplastic polyps among the diminutive polyps numbered 2,229 (64.9%). It is very important to identify carcinomas (36 cases, 0.1%) among these diminutive ones. Therefore, colonic diminutive lesions should not be ignored or overlooked because of their small size. These lesions should be removed endoscopically and examined pathologically. These diminutive lesions can be recognized by their slightly different color, and/or uneveness making them stand out from the surrounding mucosa.

 We hope that the origin of colonic carcinoma may be further understood by the accumulation of evidence concerning such diminutive lesions as we have mentioned.


Copyright © 1990, 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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