Hyperthermia and High Dose Rate Radiation Therapy in Treating Patients With Recurrent Prostate Cancer After Radiation

PRIMARY OBJECTIVES: I. To assess the safety and feasibility of combined single fraction high dose rate (HDR) brachytherapy followed immediately by interstitial hyperthermia treatment of radio-recurrent prostate cancer. SECONDARY OBJECTIVES: I. To assess long-term toxicity. II. To provide a preliminary assessment of efficacy. III. To obtain blood for future analysis of immune response to combined radiation therapy and hyperthermia. OUTLINE: Patients undergo high dose rate brachytherapy for 15-30 minutes. Immediately after radiation therapy (no longer than 90 minutes), patients undergo interstitial hyperthermia treatment for up to 60 minutes. After completion of study treatment, patients are followed up at 1 week, 1 month, and every 3 months for 2 years, every 6 months for 3 years and annually thereafter.