The Facts of Prostate Cancer 2/3 of men over age 50 have low grade tumors or potential cancer cells in their prostate. Only 10% will develop clinically aggressive prostate cancer. These non-invasive exams tell if a tumor is aggressive or not with an accuracy exceeding traditional biopsy results and correlate well with prognosis according to the latest international cancer conferences. The PSA test has a poor correlation with cancer detection. The...