Your kidneys are two bean-shaped organs, each about the size of your fist. They’re located behind your abdominal organs, one on each side of your spine. Like other major organs in the body, the kidneys can sometimes develop cancer. In adults, the most common type of kidney cancer is renal cell carcinoma, which begins in the cells that line the small tubes within your kidneys.
Kidney cancer rarely causes signs or symptoms in its early stages. In the later stages, kidney cancer signs and symptoms may include:
- Blood in your urine, which may appear pink, red or cola-colored
- Back pain just below the ribs that doesn’t go away
- Weight loss
- Intermittent fever