The prostate gland lies just under the male bladder.
Prostate cancer is a malignant tumor that grows in the gland.
The prostate gland is the size and shape of a chestnut. The prostate produces a fluid that nourishes sperm and is ejaculated during orgasm. Prostate cancer is very common, particularly in African- American men. It usually develops in men over age 55, but can occur in younger men. The cause of prostate cancer is not known.