直腸がんに対する括約筋温存手術――限界から完璧へ
1Department of Colorectal Surgery, the First Affiliated Hospital of Naval Medical University, Shanghai 200433, China.
まとめ
低位直腸がんに対する括約筋温存手術は、腫瘍学的安全性と機能を両立させます。「Watch & Wait」戦略や手術手技の進歩により新たな選択肢が提供され、免疫療法が予後改善に貢献すると期待されています。
科学分野:
- 大腸がん手術
- 腫瘍学
- 手術の革新
背景:
- 低位直腸がんにおける括約筋温存は、腫瘍生物学と骨盤解剖学に関する高度な理解を必要とする困難な課題です。
- 手術のパラダイムは、根治的切除から腫瘍学的安全性と機能温存の両方を優先することへとシフトしました。
研究 の 目的:
- 低位直腸がんに対する現在の括約筋温存療法のレビュー。
- 低侵襲手術、非手術的管理、および免疫療法などの新しい治療法の役割を探求すること。
主な方法:
- 低位前方切除術(LAR)、括約筋間切除術(ISR)、および経肛門的直腸間膜全摘除術(taTME)を含む手術手技のレビュー。
- 非手術的選択肢としての「Watch & Wait」戦略の検討。
- 特定の患者グループに対する術前療法との組み合わせにおける免疫療法の探求。
主要な成果:
- 様々な手術法により、括約筋温存能力は進歩しました。
- 「Watch & Wait」戦略は、選択された患者に対して非手術的アプローチを提供します。
- 免疫療法と術前療法を組み合わせることで、pMMR/MSS患者における括約筋および臓器の温存率を改善する可能性が示されています。
結論:
- 低位直腸がんに対する将来の括約筋温存治療は、患者中心であり、精密医療、多職種連携、人工知能を統合するものとなるでしょう。
- 目標は、腫瘍学的安全性と機能温存のバランスを最適化することです。
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