Prostate cancer is a malignant tumor that forms in the prostate gland of the male reproductive system. It is one of the most common types of cancer diagnosed in American men, over the age of 50. More than 200,000 new cases are diagnosed each year in the United States. As with most cancers, prostate cancer is not contagious. Recently, the overall 5-year survival rates for all stages of prostate cancer have increased from 69% to nearly 100%.
This change is a result of early detection and better treatment methods, in particular minimally invasive robotic surgery.
The main function of the prostate is to produce semen, which transports sperm during ejaculation. Normally, the prostate is small, about the size and shape of a walnut. The prostate gland is located below the bladder, encircles the urethra, and is in front of the rectum.