胃と腸51巻7号

2016年06月発行

今月の主題 新しい小腸・大腸画像診断─現状と将来展望

主題

大腸カプセル内視鏡

著者： 岡志郎¹² 田中信治¹² 國原紗代子² 井川敦² 中野誠² 茶山一彰²

所属機関： ¹広島大学病院内視鏡診療科 ²広島大学病院消化器・代謝内科

ページ範囲：P.872 - P.880

文献概要

要旨●大腸カプセル内視鏡は2009年より第二世代に移行し，本邦では2014年1月に保険収載された．この第二世代の大腸内視鏡カプセルは視野角172°のカメラをカプセル両端に有し，撮影枚数を自動に調節するAFRや病変サイズが計測可能なPSEが搭載されており，径6mm以上の大腸ポリープの感度は84〜91％，特異度64〜94％と報告されている．大腸カプセル内視鏡は，全大腸観察が困難な症例や，羞恥心などの心理的負担により大腸がん検診で便潜血陽性だが大腸内視鏡検査を躊躇している患者に対するオプションとしての可能性を秘めており，将来的には大腸がん検診の受診率向上への寄与が期待される．ただし，現時点では高コスト，前処置，適応，読影などの課題が山積しており，さらなる機器の改良や工夫が必要である．

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