TY - JOUR
T1 - NBI magnifying endoscopic classification of colorectal tumors proposed by the Japan NBI expert team (JNET)
AU - Saito, Yutaka
AU - Matsuda, Takahisa
AU - Nakajima, Takeshi
AU - Sakamoto, Taku
AU - Yamada, Masayoshi
AU - Saito, Shoichi
AU - Ikematsu, Hiroaki
AU - Wada, Yoshiki
AU - Oka, Shiro
AU - Kawano, Hiroshi
AU - Sano, Yasushi
AU - Tanaka, Shinji
AU - Fujii, Takahiro
AU - Kudo, Shin Ei
AU - Uraoka, Toshio
AU - Kobayashi, Nozomu
AU - Nakamura, Hisashi
AU - Hotta, Kinichi
AU - Horimatsu, Takahiro
AU - Sakamoto, Naoto
AU - Fu, Kuang I.
AU - Tsuruta, Osamu
AU - Kashida, Hiroshi
AU - Takeuchi, Yoji
AU - Machida, Hirohisa
AU - Kusaka, Toshihiro
AU - Yoshida, Naohisa
AU - Hirata, Ichiro
AU - Terai, Takeshi
AU - Yamano, Hiro O.
AU - Kaneko, Kazuhiro
AU - Yamaguchi, Yuichiro
AU - Tamai, Naoto
AU - Nakano, Naoko
AU - Hayashi, Nana
AU - Iwatate, Mineo
AU - Ishikawa, Hideki
AU - Yoshida, Shigeaki
PY - 2016
Y1 - 2016
N2 - Many clinical studies on narrow-band imaging (NBI) have reported the usefulness of NBI magnifying endoscopy for qualitative and quantitative diagnosis of colorectal lesions in Japan. However, critical discussions have raised issues such as i) the presence of multiple terms for similar findings, ii) the necessity of taking into account surface patterns, and iii) differences in NBI findings between elevated (polypoid growth, PG) and superficial lesions (non-polypoid growth, NPG). The Japan NBI Expert Team (JNET) was constituted with the aim of establishing a universal NBI magnifying endoscopic classification of colorectal tumors (JNET classification) in 2011. To establish a universal NBI magnifying endoscopic classification of colorectal tumors, the JNET, consisting of 38 NBI expert members, was formed within the "Research Group of the National Cancer Center Research and Development Fund" (Yutaka Saito Group) in 2011. First, a working group was organized consisting of young but experienced researchers from six institutions in order to establish common evaluation criteria of the JNET classification. Consequently, normal/hyperplastic lesions were classified as type 1, low-grade adenomas as type 2A, high-grade adenomas as type 2B, and deep submucosal invasive cancers as type 3, and a magnifying NBI scale that took into account the vascular and surface patterns was created for both PG and NPG tumors. A web-based interpretation study was conducted by a JNET member in order to determine the NBI findings and diagnostic criteria to be used in the universal classification system in 2013. A JNET classification system was established based on the results of univariate/multivariate analyses using a modified Delphi method at a consensus meeting on June 6, 2014. The JNET classification consists of four categories of vessel and surface patterns, 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 (SSA/P), low-grade intramucosal neoplasia, high-grade intramucosal neoplasia/superficial submucosal invasive cancer, and deep submucosal invasive cancer, respectively. At present, validation studies for the JNET classification have been proposed to be conducted.
AB - Many clinical studies on narrow-band imaging (NBI) have reported the usefulness of NBI magnifying endoscopy for qualitative and quantitative diagnosis of colorectal lesions in Japan. However, critical discussions have raised issues such as i) the presence of multiple terms for similar findings, ii) the necessity of taking into account surface patterns, and iii) differences in NBI findings between elevated (polypoid growth, PG) and superficial lesions (non-polypoid growth, NPG). The Japan NBI Expert Team (JNET) was constituted with the aim of establishing a universal NBI magnifying endoscopic classification of colorectal tumors (JNET classification) in 2011. To establish a universal NBI magnifying endoscopic classification of colorectal tumors, the JNET, consisting of 38 NBI expert members, was formed within the "Research Group of the National Cancer Center Research and Development Fund" (Yutaka Saito Group) in 2011. First, a working group was organized consisting of young but experienced researchers from six institutions in order to establish common evaluation criteria of the JNET classification. Consequently, normal/hyperplastic lesions were classified as type 1, low-grade adenomas as type 2A, high-grade adenomas as type 2B, and deep submucosal invasive cancers as type 3, and a magnifying NBI scale that took into account the vascular and surface patterns was created for both PG and NPG tumors. A web-based interpretation study was conducted by a JNET member in order to determine the NBI findings and diagnostic criteria to be used in the universal classification system in 2013. A JNET classification system was established based on the results of univariate/multivariate analyses using a modified Delphi method at a consensus meeting on June 6, 2014. The JNET classification consists of four categories of vessel and surface patterns, 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 (SSA/P), low-grade intramucosal neoplasia, high-grade intramucosal neoplasia/superficial submucosal invasive cancer, and deep submucosal invasive cancer, respectively. At present, validation studies for the JNET classification have been proposed to be conducted.
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M3 - Review article
AN - SCOPUS:85020552304
SN - 0387-1207
VL - 58
SP - 2314
EP - 2322
JO - GASTROENTEROLOGICAL ENDOSCOPY
JF - GASTROENTEROLOGICAL ENDOSCOPY
IS - 11
ER -
