prostate cancer

Prostate cancer is the uncontrolled growth of cells in the prostate, a gland in the male reproductive system just below the bladder. Early prostate cancer usually causes no symptoms. As the cancer develops, one or more tumors can damage nearby organs causing erectile dysfunction, blood in the urine or semen, and trouble urinating. For some patients, the cancer eventually spread to other areas of the body, particularly the bones and lymph nodes. There, tumors cause severe bone pain, leg weakness or paralysis, and eventually death.