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Diagnosis of Colorectal Lesions Using Image Enhanced Endoscopy Wataru Sano 1 , Naoki Sugimura 1 , Daizen Hirata 1 , Mineo Iwatate 1 , Santa Hattori 1 , Mikio Fujita 1 , Yasushi Sano 1 1Gastrointestinal Center, Sano Hospital, Kobe, Japan Keyword: 画像強調内視鏡 , JNET分類 , sessile serrated lesion , 陥凹型腺腫 , O-ring sign pp.1243-1250
Published Date 2022/9/25
DOI https://doi.org/10.11477/mf.1403202995
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 Recently, the qualitative and quantitative diagnostic methods using image-enhanced colonoscopy have transitioned from the usage of non-magnified white light to magnified chromoendoscopic visualization and finally to NBI(narrow band imaging)visualization, which is the most commonly used method now. JNET(the Japan NBI Expert Team)classification is widely used in Japan as an index for diagnosis using magnified NBI. Although several validation studies for the JNET classification reported to date are generally favorable, it is essential to consider the following three points:1) JNET Type 1 lesions include pre-cancerous sessile serrated lesions, 2) Type 2A findings as observed in conventional adenomas may not be observed in depressed adenomas, and 3) surgical excision is recommended for Type 3 lesions, while Type 2B lesions require an in-depth diagnosis by additional magnified chromoendoscopic visualization.


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

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