
Kidney cancer is among the top 10 most common cancers in both men and women. There are about 58,000 cases of newly diagnosed kidney cancer in the United States every year. This includes both cancer arising from abnormal growth of cells in the parynchema or meat of the kidney, as well as cancer arising from the cells lining the collecting tract (where urine collects) within the kidney. Of these 65% are men, and 35% are women. Most patients are older, and the average age of diagnosis is 65. The incidence is highest amongst people between the ages of 55-84. There has been a rise in the incidence of kidney cancer in past decades, however this may be due to better detection through the development of CT scanners and other imaging tools.