Prognostic significance of pretreatment hydronephrosis in radiotherapy-based bladder-preserving strategies for muscle-invasive bladder cancer: a systematic review and meta-analysis. Arch Ital Urol Androl [Internet]. 2026 May 29 [cited 2026 May 30];. Available from: https://www.pagepressjournals.org/aiua/article/view/14945