ベースライン前立腺MRIPI-RADS分類と,積極的監視中のグリーソンアップグレードのリスクとの関連:体系的なレビューとメタ解析
Shayan Smani1, Nishan Sohoni1, Marcin Miszczyk2,3
1Yale School of Medicine, New Haven, CT, USA.
World journal of urology
|February 15, 2026
まとめ
前立腺MRIPI-RADSスコアは,積極的な監視 (AS) 中の好ましいリスク前立腺がん (PCa) 患者のグリソングレードグループ (GG) アップグレードリスクを予測します. より高いPI-RADSスコア (4-5) は,GGアップグレードのリスクが高いことを示します.
科学分野:
- 泌尿器科 泌尿器科とは
- 放射線学 放射線学
- 腫瘍学 腫瘍学
背景:
- 前立腺磁気共鳴画像 (MRI) は,高度の前立腺がん (PCa) を検出するのに役立ちます.
- 積極的監視 (AS) で管理される好ましいリスクのPCaに対するベースラインMRI前立腺画像・報告・データシステム (PI-RADS) のスコアの予測値は不明である.
研究 の 目的:
- ベースラインPI-RADSスコアとグリーソングレードグループ (GG) アップグレードのリスクとの関連性を調べる.
主な方法:
- 関連する研究を特定するために,8つのデータベースで体系的な文献検索が行われました.
- ハートゥング・ナップのランダム効果モデルを用いた危険比率 (HR) のメタ分析が行われました.
- バイアスのリスクはROBINS-Iツールを使用して評価されました.
主要な成果:
- 6309人の患者を含む11の研究が含まれており,中程度のバイアスのリスクが認められた.
- ベースラインPI-RADS 4-5の病変は,PI-RADS 1-3の病変と比較してGGアップグレードのリスクが著しく増加した (HR: 2.21).
- 個別に,PI-RADS 3,4,および5の病変は,PI-RADS 1-2と比較して,進行的に上昇するリスクを示しました.
結論:
- 初期前立腺MRIPI-RADSスコアは,ASの好ましいリスクのPCa患者におけるGGアップグレードの高度な予後である.
- 発見は,初期MRI結果に基づいて,調整された監視戦略の開発の可能性を示唆しています.
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