Re-occurence of prostate cancer is not uncommon. In fact, there is a 15-30 percent chance of the cancer re-occuring after radiation, surgery, and hormone therapy. After the surgery, the doctor keeps monitoring your PSA level to identify any symptoms of reoccurrence. Even if cancer reoccurs, the 3-year survival chances of the patients are quite reasonable. The doctor recommends a PSA test every 3 months after the surgery.