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Prostate cancer is the uncontrolled growth of cells in the prostate. It is often detected through blood tests for prostate-specific antigen, followed by a biopsy. Most prostate tumors (diagram pictured) cause no health problems, and are managed with surveillance. Dangerous tumors can be surgically removed or destroyed with radiation therapy. Those whose cancer spreads receive hormone therapy, targeted therapy, and eventually chemotherapy. Most tumors are confined to the prostate, and 99% of men