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Cancer of the kidneys, also known as renal cancer, can be cured if detected early. However, symptoms may not occur until the tumor has become large or metastasized (spread to other organs), when it is difficult to treat. The majority of kidney cancers are renal cell carcinomas, also known as renal adenocarcinomas or clear cell carcinomas. Most kidney cancers affect adults between 50 and 70 years of age. The most common type of kidney cancer in children is called Wilms tumor. The July 7, 2004, issue of JAMA includes an article about renal cancer.

RISK FACTORS FOR KIDNEY CANCER

• Kidney cancers most commonly occur in adults older than 50 years.
  
• Men are twice as likely to have renal cancers as women are.
  
• Cigarette smoking increases the risk of developing renal cell cancer.
  
• Environmental and occupational exposures to asbestos, cadmium, and organic solvents increase the risk of developing kidney cancer.
  
• Obesity and . . . [Full Text of this Article]

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