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Efficacy of JNET(the Japan Narrow-Band Imaging Expert Team)Classification for Colorectal Tumors and the Diagnostic Performance of JNET Type 2B Hikari Kobayashi 1 , Shoichi Saito 1 , Keigo Suzuki 1 , Junki Tokura 1 , Chihiro Yasue 1 , Daisuke Ide 1 , Akiko Chino 1 , Masahiro Igarashi 1 , Hiroshi Kawachi 2 1Department of Gastroenterology, Lower GI medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo 2Department of Pathology, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo Keyword: IEE , NBI , BLI , JNET分類 , 色素拡大観察 pp.1657-1664
Published Date 2022/12/25
DOI https://doi.org/10.11477/mf.1403203069

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 In this study, the efficacy of the endoscopic finding characteristics by JNET(the Japan Narrow-Band Imaging Expert Team)classification was examined, including the diagnostic performance of JNET type 2B.

 The results revealed that JNET type 1 classification was a very reliable indicator for HP(hyperplastic polyp)/SSL(sessile serrated lesion), and type 3 was a reliable indicator for T1b cancer. The specificity of type 2B was relatively higher than that of type 2A. In the examination of the pit pattern for type 2B, the ratio of type VI mild irregularity and type VI severe irregularity pit patterns was high. The type VI subclassification for type 2B was useful for distinguishing deep submucosal invasive cancer.

 Thus, the JNET classification was deemed as a useful method for colorectal lesion characterization. However, the pit pattern should be considered as an additional method for diagnosing lesions as type 2B prior to treatment as there are various histological types of JNET type 2B.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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