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Cancer of the prostate

The prostate is a small gland about the size of a walnut situated at the base of the bladder. It is only found in men and makes some of the fluid of a thick white liquid called semen. Semen mixes with sperm and comes out of the penis via the urethra when a man has an orgasm. The prostate produces a protein called prostate specific antogen (PSA) which turns semen into liquid form.

Around 27,000 new cases of prostate cancer are diagnosed each year in the UK and it is the most common cancer amongst men. It is rarely found in men under 45; incidence increases with age and it is quite common in men over 80.

Cancer of the prostate is a serious disease but is often slow to develop.  It is an unusual cancer because in some it affects only a small area of the prostate and grows so slowly it may never need treatment and does not cause symptoms. In others (usually younger men) it causes more symptoms and can spread outside the prostate (particularly to the bones).