手術または放射線療法で治療された前立腺がん患者の膀および直腸がんの発症:集団ベースの研究
P Martínez Rodríguez1, A Poza Fernandez1, G García Fadrique1
1Hospital de Manises, Manises, Valencia, Spain.
Actas urologicas espanolas
|February 14, 2026
まとめ
前立腺がんに対する放射線治療 (RT) は,急性前立腺切除 (RP) に比べて,骨盤腫瘍と直腸/尿路毒性のリスクを高めます. この研究は,前立腺がん治療におけるRTの潜在的な副作用を強調しています.
科学分野:
- 腫瘍学 腫瘍学
- 放射線腫瘍学 放射線腫瘍学
- 泌尿器科 泌尿器科とは
背景:
- ラジカル前立腺切除 (RP) と放射線療法 (RT) は,局所性および局所的に進行した前立腺がん (PCa) の主要な治療法です.
- 骨盤の悪性腫瘍および放射線誘発性直腸または尿道毒性に関するデータは限られている.
- 勃起不全と尿失禁は,よく文書化された副作用です.
研究 の 目的:
- 前立腺がんのRPとRTの間で,骨盤腫瘍の発生率と治療関連の毒性を比較する.
- RT対RPで治療された患者の二次悪性腫瘍と毒性のリスクを評価する.
主な方法:
- 2010年から2019年の間にRP (138) またはRT (218) で治療された局所性/局所的に進行したPCaの356人の患者の遡及的分析.
- 直腸/膀の腫瘍と尿路/胃腸の毒性の比較,チ2とロジスティック回帰を用いた.
- 臨床的変数に調整された多変量分析.
主要な成果:
- グループ間では,腫瘍のステージや喫煙状態の有意な差異はありませんでした.
- RTグループは,骨盤腫瘍 (p=0.032) と膀腫瘍 (p=0.033) の発生率が高かった.
- RT 尿路および胃腸毒性の有意な増加 (p<0.001),膀腫瘍のリスクが11倍増加しました.
結論:
- 前立腺がんのRTは,RPと比較して,骨盤腫瘍と尿路/直腸内毒性のより高い発生率と関連しています.
- これらの発見は,RT治療を受けた患者の二次悪性腫瘍と毒性のモニタリングの重要性を強調しています.
- RT技術を最適化し,これらのリスクを軽減するためにさらなる研究が必要です.
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