Premium
Narrow‐band imaging (NBI) magnifying endoscopic classification of colorectal tumors proposed by the Japan NBI Expert Team
Author(s) -
Sano Yasushi,
Tanaka Shinji,
Kudo Shinei,
Saito Shoichi,
Matsuda Takahisa,
Wada Yoshiki,
Fujii Takahiro,
Ikematsu Hiroaki,
Uraoka Toshio,
Kobayashi Nozomu,
Nakamura Hisashi,
Hotta Kinichi,
Horimatsu Takahiro,
Sakamoto Naoto,
Fu KuangI,
Tsuruta Osamu,
Kawano Hiroshi,
Kashida Hiroshi,
Takeuchi Yoji,
Machida Hirohisa,
Kusaka Toshihiro,
Yoshida Naohisa,
Hirata Ichiro,
Terai Takeshi,
Yamano Hiroo,
Kaneko Kazuhiro,
Nakajima Takeshi,
Sakamoto Taku,
Yamaguchi Yuichiro,
Tamai Naoto,
Nakano Naoko,
Hayashi Nana,
Oka Shiro,
Iwatate Mineo,
Ishikawa Hideki,
Murakami Yoshitaka,
Yoshida Shigeaki,
Saito Yutaka
Publication year - 2016
Publication title -
digestive endoscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.5
H-Index - 56
eISSN - 1443-1661
pISSN - 0915-5635
DOI - 10.1111/den.12644
Subject(s) - narrow band imaging , medicine , endoscopy , mucosal lesions , colorectal cancer , radiology , hyperplastic polyp , cancer , pathology , colonoscopy
Many clinical studies on narrow‐band imaging (NBI) magnifying endoscopy classifications advocated so far in Japan (Sano, Hiroshima, Showa, and Jikei classifications) have reported the usefulness of NBI magnifying endoscopy for qualitative and quantitative diagnosis of colorectal lesions. However, discussions at professional meetings have raised issues such as: (i) the presence of multiple terms for the same or similar findings; (ii) the necessity of including surface patterns in magnifying endoscopic classifications; and (iii) differences in the NBI findings in elevated and superficial lesions. To resolve these problems, the Japan NBI Expert Team (JNET) was constituted with the aim of establishing a universal NBI magnifying endoscopic classification for colorectal tumors (JNET classification) in 2011. Consensus was reached on this classification using the modified Delphi method, and this classification was proposed in June 2014. The JNET classification consists of four categories of vessel and surface pattern (i.e. Types 1, 2A, 2B, and 3). Types 1, 2A, 2B, and 3 are correlated with the histopathological findings of hyperplastic polyp/sessile serrated polyp (SSP), low‐grade intramucosal neoplasia, high‐grade intramucosal neoplasia/shallow submucosal invasive cancer, and deep submucosal invasive cancer, respectively.