Prostate Cancer | Overview


What is the prostate gland?

The prostate gland is part of the male reproductive system (see the picture below). The prostate makes a fluid that mixes with sperm and other fluids during ejaculation. A normal prostate is about the size of a walnut.

What is prostate cancer?

Prostate cancer is when abnormal cells grow in the prostate gland. Prostate cancer is one of the most common types of cancer in men. Most types of prostate cancer grow slowly, but some types can be aggressive. This means the cancer grows quickly and can spread to other parts of the body. When cancer spreads, doctors say the cancer has "metastasized."


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Written by editorial staff

Reviewed/Updated: 08/12
Created: 01/99