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Japanese

Magnifying Endoscopy and its Effectiveness to Diagnose the Cancerous Depth of Early Colorectal Cancer, Especially from the View Point of More Fabourably Adopting the Magnified Observation Hisashi Nakamura 1 , Akihiko Yamamura 2 , Touzoh Hosoi 1 , Toshikuni Okada 1 1Department of Gastroenterology, Tama Cancer Detection Center 2Department of Pathology, Tama Cancer Detection Center Keyword: 早期大腸癌 , 深達度診断 , 通常内視鏡検査 , 拡大観察 , 腺口形態診断 pp.829-836
Published Date 2001/5/25
DOI https://doi.org/10.11477/mf.1403103238
  • Abstract
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 We analyzed 139 early colorectal cacers : whether abnormal pit patterns recognized through magnifying endoscopy are useful for diagnosing the cancerous depth. Using to Kudo's subdivision of pit pattern Ⅴ, ⅤA was consonant with m/sm1 in 71.7%, sm2/sm3 in 28.3% of the cases while ⅤN was consonant with sm2/sm3 in 83.3% of the cases. The cancerous depth of these lesions differ considerably (p<0.01). The observation method was split into 2 categories : the “ordinary”group (either natural or employing indigocarmine) and the “magnified” group employing crystal violet at the time of observation. Incidence of correct diagnosis with canccerous depth between the above two groups was compared, no significance was present. Furthermore, each group was broken down into 2 categories : the “conviction” group and the “suspect”group. In the magnified group, the numbers in the conviction group pronouncedly increased while the numbers in the suspect group decreased contrariwise. In other words, companing the numbers in the “conviction” group with the total of 139 cases, correct diagnosis was extremely improved from 74.8% (104/139) in the ordinary group to 90.6% (126/139) in the magnified group, which was indicative of the usefulness of magnified observation.


Copyright © 2001, 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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