胃と腸55巻1号

2020年01月発行

今月の主題 早期胃癌の範囲診断up to date ノート

AIによる早期胃癌診断の最前線

著者： 金坂卓¹ 上堂文也¹ 石原立¹

所属機関： ¹大阪国際がんセンター消化管内科

ページ範囲：P.96 - P.99

要旨●近年，AI（artificial intelligence）による内視鏡診断が注目されている．AIによる胃癌の通常内視鏡診断では，存在診断と深達度診断の報告があり，前者は感度92.2%，陽性適中率30.6%である．後者はAUC（area under the curve）が0.851と超音波内視鏡検査よりも優れている可能性が示されている．一方，AIによる胃癌の拡大内視鏡診断では，小陥凹型胃病変の鑑別診断において，感度96.7%，特異度95%，正診率96.3%と報告されており，非熟練医と比較して感度，特異度，正診率は有意に高い．範囲診断能は，感度65.5%，特異度80.8%，正診率73.8%と報告されている．

参考文献

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