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Changes of V Type Pit Pattern Diagnosis for Colorectal Neoplasia and Its Present Status Shinji Tanaka 1 , Shiro Oka 1 , Iwao Kaneko 1 , Hiroyuki Kanao 2 , Tohru Kawamura 1 , Ritsuo Mouri 2 , Mayuko Hirata 2 , Kei Shinagawa 1 , Masaru Shimamoto 2 , Shigeto Yoshida 1 , Masaharu Yoshihara 3 , Kazuaki Chayama 2 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Gastroenterology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan 3Health Service Center, Hiroshima University, Hiroshima, Japan Keyword: 拡大観察 , V型pit pattern , 早期大腸癌 , 深達度診断 pp.1739-1750
Published Date 2006/12/25
DOI https://doi.org/10.11477/mf.1403100814
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 V type pit pattern was proposed as a characteristic feature of early colorectal cancer, however, there had been confusion regarding the definition and naming for its subclassification. In 2001, in accord with the agreement between Kudo and Tsuruta, the naming of V type pit pattern subclassification was unified as VI and VN. Subsequently, in April, 2004, the clear criteria of VN type pit pattern was defined at the Hakone pit pattern symposium, showing that VN type pit pattern is a specific indicator for submucosal massive invasive colorectal cancer. As a result, cases with VI type pit pattern include various early cancers, such as mucosal, shallow & deep submucosal invasive cancer. At present, detailed analysis on VI type pit pattern has been carried out in order to distinguish mucosal, shallow & deep submucosal inavsive cancer. On the other hand, recently, new diagnostic modalities, such as endoscopic microangiology using narrow band imaging (NBI) magnification, have been applied to the more detailed endoscopic observation. Development of endoscopic magnifying diagnosis for clinical practice is expected, using these new modalities in the future.


Copyright © 2006, 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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