MRI/PET PSMA-Based Study of Salvage HDR Brachytherapy and External Beam Radiation for Isolated Tumor Bed Relapses After Radical Prostatectomy

What this Trial Is About

Researchers are studying the long-term effects of high dose rate (HDR) brachytherapy in men who have isolated local relapses of prostate cancer after undergoing radical prostatectomy. The study aims to find out if HDR brachytherapy improves control rates and reduces complications compared to conventional external irradiation. This observational study focuses on men with prostate cancer recurrence visible on imaging and suitable for HDR brachytherapy. The treatment involves HDR brachytherapy combined with external beam radiation and six months of androgen deprivation therapy. HDR brachytherapy targets small, well-defined tumor areas using imaging techniques like PET/MRI and transrectal ultrasound guidance to deliver higher radiation doses while sparing sensitive surrounding tissues. This approach aims to reduce radiation exposure to critical structures such as the external urinary sphincter and penile bulb. Participants will receive HDR brachytherapy as part of their usual medical care and will be monitored for biochemical relapse-free survival over five years. The study includes regular imaging assessments, PSA monitoring, and evaluation of treatment effects and complications. The total participation period covers long-term follow-up to observe outcomes and safety in men treated for isolated prostate bed relapses after prostatectomy.

High Dose Rate (HDR) Brachytherapy Salvage After Prostatectomy