The prostate is a small gland that is part of a man’s reproductive system. It produces seminal fluid that nourishes and helps transport sperm. The prostate is situated in front of the rectum and below the bladder. Like a donut, it surrounds the urethra, a thin tube that transports urine from the bladder. When enlarged, it squeezes the urethra, causing difficulty in urination. Because of its position in front of the rectum, the digital rectal exam allows the doctor to feel the prostate for lumps and irregularities that can be signs of prostate cancer.
If prostate cancer is not found early, it can spread to the lymph nodes, bones and other parts of the body. When treated early, the five-year survival rates are almost 100 percent; when found late, only one-third of men afflicted live another five years.
Source: National Cancer Institute
