Comparison of blue laser imaging and light‐emitting diode‐blue light imaging for the characterization of colorectal polyps using the Japan narrow‐band imaging expert team classification: The LASEREO and ELUXEO COLonoscopic study
Masahiro Okada,
Naohisa Yoshida,
Hiroshi Kashida,
Yoshikazu Hayashi,
Satoshi Shinozaki,
Shiori Yoshimoto,
Toshihiro Fujinuma,
Hirotsugu Sakamoto,
Keijiro Sunada,
Yuri Tomita,
Osamu Dohi,
Ken Inoue,
Ryohei Hirose,
Yoshito Itoh,
Yoriaki Komeda,
Ikue Sekai,
Natsuki Okai,
Alan Kawarai Lefor,
Hironori Yamamoto
Affiliations
Masahiro Okada
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Naohisa Yoshida
Department of Molecular Gastroenterology and Hepatology Kyoto Prefectural University of Medicine, Graduate School of Medical Science Kyoto Japan
Hiroshi Kashida
Department of Gastroenterology and Hepatology Kindai University Osaka Japan
Yoshikazu Hayashi
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Satoshi Shinozaki
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Shiori Yoshimoto
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Toshihiro Fujinuma
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Hirotsugu Sakamoto
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Keijiro Sunada
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Yuri Tomita
Department of Molecular Gastroenterology and Hepatology Kyoto Prefectural University of Medicine, Graduate School of Medical Science Kyoto Japan
Osamu Dohi
Department of Molecular Gastroenterology and Hepatology Kyoto Prefectural University of Medicine, Graduate School of Medical Science Kyoto Japan
Ken Inoue
Department of Molecular Gastroenterology and Hepatology Kyoto Prefectural University of Medicine, Graduate School of Medical Science Kyoto Japan
Ryohei Hirose
Department of Molecular Gastroenterology and Hepatology Kyoto Prefectural University of Medicine, Graduate School of Medical Science Kyoto Japan
Yoshito Itoh
Department of Molecular Gastroenterology and Hepatology Kyoto Prefectural University of Medicine, Graduate School of Medical Science Kyoto Japan
Yoriaki Komeda
Department of Gastroenterology and Hepatology Kindai University Osaka Japan
Ikue Sekai
Department of Gastroenterology and Hepatology Kindai University Osaka Japan
Natsuki Okai
Department of Gastroenterology and Hepatology Kindai University Osaka Japan
Alan Kawarai Lefor
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Hironori Yamamoto
Department of Medicine, Division of Gastroenterology Jichi Medical University Tochigi Japan
Abstract Objectives Although the laser light is optically ideal for producing narrow‐band light, it has not been used in some areas of the world. Endoscopic light sources using light‐emitting diodes (LEDs) are used worldwide. The purpose of this study was to compare blue laser imaging (laser‐BLI) and LED‐blue light imaging (LED‐BLI) for the characterization of colorectal polyps using the Japan narrow band imaging expert team (JNET) classification. Methods Colorectal lesions were prospectively examined using magnifying narrow‐band light generated by a laser (laser‐BLI) or LEDs (LED‐BLI). Twelve endoscopists (six non‐experts and six experts from three institutions) evaluated each still‐magnified image of lesions using the JNET classification. Results Seven hundred and fifty‐six images from 63 lesions were reviewed. The mean polyp size was 24.5 ± 13.4 mm. Histopathology included 13 serrated lesions and 50 neoplasms. The rate of agreement between laser‐BLI and LED‐BLI using the JNET classification was 92.5% (699/756). The weighted κ‐statistic was 0.99. The percentages of “almost similar” comparing scores of surface patterns, vessel patterns, and brightness among all endoscopists were 95.4%, 95.9%, and 95.0%, respectively. Conclusions This multicenter study demonstrates that the rate of agreement between laser‐BLI and LED‐BLI using the JNET Classification is very high. The surface patterns, vessel patterns, and brightness are almost similar.
