Kidney tumors may not hurt or show any signs. Sometimes a growth in the kidney can cause:
- Blood in the urine
- Pain in the side, abdomen or back that doesn’t go away
- A lump in your abdomen
- Loss of appetite and weight loss for no known reason
- Anemia and fatigue
If cancer spreads (metastasizes) beyond the kidney, symptoms depend upon where it spreads. Short breath or coughing-up blood may occur when cancer is in the lung. Bone pain or fracture may occur when cancer is in the bone. Neurologic symptoms may occur when cancer is in the brain.