Keeping score of prostate cancer

Men with high prostate-specific antigen (PSA) levels often get a biopsy of prostate tissue to check for cancer. The results of the biopsy are calculated to create a Gleason score, which helps doctors assess whether the cancer is low-, medium-, or high-risk. Based on that information, doctors may recommend that a man follow active surveillance (in which he monitors his PSA for changes) or begin cancer treatment.