Signs and Symptoms of Kidney Cancer

Early kidney cancers do not usually cause any signs or symptoms, but larger ones might. Some possible signs and symptoms of kidney cancer include:

  • Blood in the urine (hematuria)
  • Low back pain on one side (not caused by injury)
  • A mass (lump) on the side or lower back
  • Fatigue (tiredness)
  • Loss of appetite
  • Weight loss not caused by dieting
  • Fever that is not caused by an infection and that doesn’t go away
  • Anemia (low red blood cell counts)

These signs and symptoms can be caused by kidney cancer (or another type of cancer), but more often they are caused by other, benign, diseases. For example, blood in the urine is most often caused by a bladder or urinary tract infection or a kidney stone. Still, if you have any of these symptoms, see a doctor so that the cause can be found and treated, if needed.

The American Cancer Society medical and editorial content team
Our team is made up of doctors and master’s-prepared nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.

Last Medical Review: February 24, 2014 Last Revised: May 16, 2016

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