内視鏡検査後の食道がんの生存率:北欧の人口ベースコホート研究
Dag Holmberg1, Amalia Liljequist Aspelund1, Sachin Wani2
1Department of Molecular medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Endoscopy
|February 6, 2026
まとめ
内視鏡検査後の食道がん(PEEC)の生存率は低いが、他の食道がんよりも良好である。本研究では、PEEC患者、特に腺癌患者の死亡リスクの低下が認められた。
科学分野:
- 腫瘍学
- 消化器病学
- 疫学
背景:
- 内視鏡検査後の食道がん(PEEC)は、食道がんの5-10%を占める。
- PEEC患者の長期生存データは、これまで報告されていなかった。
研究 の 目的:
- PEECと診断された患者の長期生存転帰を調査すること。
- PEEC患者と他の食道がん患者の生存率を比較すること。
主な方法:
- デンマーク、フィンランド、スウェーデンの食道がん患者27,309人(2004-2022年)を対象とした人口ベースコホート研究。
- PEEC患者(n=1588)は、診断の6〜36ヶ月前に上部内視鏡検査を受けていたと定義された。
- 5年疾患特異的死亡率および全原因死亡率を多変量Cox比例ハザードモデルを用いて分析した。
主要な成果:
- PEEC患者の5年疾患特異的死亡率は74.6%、全原因死亡率は79.6%であった。
- PEECは、5年死亡リスクの低下と関連していた(疾患特異的死亡率:ハザード比0.72、全原因死亡率:ハザード比0.74)。
- PEECにおける死亡率の低下は、腺癌(ハザード比0.57)では有意であったが、扁平上皮癌(ハザード比1.04)では有意ではなかった。
結論:
- PEEC患者の5年生存率は、他の食道がん患者よりも良好であるが、全体的な生存率は依然として低い。
- PEEC診断による生存率の向上は、腺癌組織型に特異的であった。
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