Imperial Prostate 9 - ATLAS (Approaches To Long-Term Active Surveillance)

The ATLAS study is following men with localized prostate cancer who have chosen active surveillance — a careful monitoring approach rather than immediate treatment. The study aims to find the best long-term monitoring strategy to safely track the cancer and decide if and when treatment is needed. **You may be eligible if...** - You are 18 years or older - You have been diagnosed with localized prostate cancer confirmed by biopsy - You have had an MRI scan of the prostate - You have chosen active surveillance as your management approach - You have been on active surveillance for less than 9 months **You may NOT be eligible if...** - You have been on active surveillance for more than 9 months before the study screening date - You have a contraindication to MRI or gadolinium contrast dye - You have had both hips replaced (interferes with imaging) - You cannot have a transrectal ultrasound-guided biopsy Talk to your doctor to see if this trial is right for you.