Close Get Latest Internet Explorer Get Latest Firefox Get Latest Chrome

Kidney cancer begins in the kidneys, two large, bean-shaped organs located to the left and right of the backbone. Renal is the Latin word for kidney, and kidney cancer may also be referred to as renal cancer.

In the early stages, kidney cancer often causes no symptoms. As the cancer grows, symptoms may develop. These are the most common symptoms in people with kidney cancer:

  • Blood in the urine
  • Side or back pain
  • A mass or lump in the side or lower back
  • Fatigue, which is a chronic, unexplained tiredness
  • Rapid weight loss without making an effort to lose weight
  • Other symptoms, such as fever with no known cause, leg or ankle swelling, and high blood pressure

People with kidney cancer may have any combination of these symptoms. If you have any of these symptoms, see a doctor as soon as possible.