The Prostate Active Surveillance Study (PASS) is for men with prostate cancer who choose to watch their condition closely instead of immediate treatment. This approach, called active surveillance, involves regular check-ups and tests. The study aims to find out which cancers grow quickly and need treatment and which grow slowly. It includes men whose cancer hasn't spread or been treated before. Participants will have regular prostate exams, PSA tests (a blood test that measures a protein made by the prostate), and biopsies (a small tissue sample from the prostate) to monitor cancer.

Key Points:

• The study requires routine visits for prostate exams, PSA tests, and biopsies.
• Participants must not have had prostate cancer treatment before joining.
• The study helps find markers to predict cancer behavior, but it involves regular biopsies, which some may find uncomfortable.

Participants need to be willing to have regular biopsies, and their cancer should have been diagnosed within the last three years. Men with other cancers or who can't manage regular biopsies aren't eligible. The study will help doctors understand how to manage prostate cancer better in the future.