What is prostate cancer?
The prostate is a gland in men that produces a fluid that makes up about 30% of semen. It is found below the bladder and in front of the rectum. The size of the prostate changes with age. Prostate cancer develops when cells in the prostate gland start to grow uncontrollably.
In younger men the prostate 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.
Concerned about prostate cancer? Talk to us
Or visit our Diagnosis page.