Prostate Cancer begins when cells in the prostate gland ―gland found only in males that makes some of the fluid that is part of semen―, start to grow uncontrollably.
The prostate is below the bladder and in front of the rectum, and its size may change with age: in younger men, it is about the size of a walnut, but it can be much larger in older men.
Some prostate cancers can grow and spread quickly, but most grow slowly. In fact, autopsy studies show that many older men (and even some younger men) who died of other causes also had prostate cancer that never affected them during their lives. In many cases neither they nor their doctors even knew they had it.
Prostate Cancer is the most common cancer in men in the United States, after Skin Cancer. It is the second leading cause of death from cancer in men. Prostate Cancer occurs more often in African-American men than in white men. African-American men with Prostate Cancer are more likely to die from the disease than white men with Prostate Cancer.