Kidney Cancer:

Kidney Cancer is the most common type of urologic cancer and is the 8th most common cancer in men and the 10th most common cancer in women. The kidneys are two large organs that sit in the back part of the abdominal cavity. The kidney's main function is to filter the blood and clean the body of excess water, salt, and waste products. Tumors of the kidney occur twice as often in men as in women and usually occur between the ages of 50 and 70.

For additional information, visit the American Foundation for Urologic Disease site at:
http://www.afud.org/conditions/kc.html