What is prostate cancer?

Prostate cancer begins in the prostate gland in men.The prostate gland is located just below the bladder and in front of the rectum. It makes a fluid that mixes with sperm and other fluids during ejaculation. Prostate cancer can grow quickly and spread to other parts of the body, or it can grow slowly and stay in the prostate. Three out of 4 cases of prostate cancer are the slow-growing type that causes few, if any, problems.