まとめ
結腸直腸癌 (CRC) の発症部位は変化しており,30年以上に渡ってディスタル病変が少なく,近接病変が多くなっている. CRCの分布のこの傾向は,よりよい早期発見のための最新の診断戦略を必要とします.
科学分野:
- 胃腸内科 胃腸内科
- 腫瘍学 腫瘍学
- エピデミオロジー エピデミオロジー
背景:
- 結腸直腸癌 (CRC) の発生率と位置は,数十年にわたって研究されてきた.
- 以前の診断方法では,CRCの発生地における現在の傾向を完全に捉えることができなかった.
研究 の 目的:
- 結腸直腸がんの発症部位の分布の変化を,少なくとも30年以上にわたって分析する.
- これらの傾向が診断ツールに与える影響を評価する.
主な方法:
- 中西部の病院で観察された1,990件の結腸直腸がん症例の分析.
- 同じ期間にカンザス州で11635例の結腸直腸がんの死亡率データをレビューした.
主要な成果:
- ディスタル (直腸) のCRC症例の統計的に有意な減少 (P=.0192).
- 近道 (眼球) CRC症例の統計的に有意な増加 (P=.0015).
- カンザス州の死亡率データは,この傾向を確認した (P<.0001).
結論:
- CRCの発生場所の分布の変化は,リスク要因や検出パターンの進化を示唆しています.
- デジタル直腸検査とシグモイドスコーピーは,30年前と比較して,CRCの診断に効果が低下しています.
- オカルト・ブラッドの便検診,バリウム・エネマ,大腸内視鏡検査は,結腸直腸がんの診断手段としてますます重要になってきている.
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