In the early stages, kidney cancer frequently causes no symptoms. As cancer grows, symptoms may develop. The most common symptoms in people with kidney cancer include:

• Blood in the urine;
• Side or back pain;
• A mass or lump in the side or lower back;
• Ongoing tiredness;
• Appetite loss;
• Fast weight loss that happens without any effort to lose weight;
• Fever with no known cause;
• Leg or ankle swelling;
• High blood pressure.

People with kidney cancer may have any combination of these symptoms.