ABlative Radiotherapy (for) Unfavorable Prostate Tumors

This trial is testing a high-dose, very precise form of radiation therapy (called ablative radiotherapy or SBRT) for intermediate- and high-risk prostate cancer. The aim is to deliver a powerful cancer-killing dose in fewer sessions while protecting surrounding healthy tissue. **You may be eligible if...** - You have been diagnosed with prostate cancer (confirmed by biopsy) - Your cancer is intermediate- or high-risk (based on standard classification) - Cancer has not spread to your lymph nodes or other organs - You are in reasonably good health (ECOG 0–2) with a life expectancy of more than 5 years - Your urinary symptom score is not severely elevated **You may NOT be eligible if...** - Your cancer has spread extensively beyond the prostate capsule (T3b or higher) - Your PSA has ever been above 20 ng/mL - You have had prior prostate surgery (radical prostatectomy or cryotherapy) - You have had prior pelvic radiation - You have active Crohn's disease or ulcerative colitis Talk to your doctor to see if this trial is right for you.