Kidney cancer is cancer that begins in the kidneys. Your kidneys are two bean-shaped organs, each about the size of your fist. They’re located behind your abdominal organs, with one kidney on each side of your spine.
In adults, renal cell carcinoma is the most common type of kidney cancer. Other less common types of kidney cancer can occur. Young children are more likely to develop a kind of kidney cancer called Wilms’ tumor.
Symptoms
Kidney cancer usually doesn’t have signs or symptoms in its early stages. In time, signs and symptoms may develop, including:
- Blood in your urine, which may appear pink, red or cola-colored
- Pain in your back or side that doesn’t go away
- Loss of appetite
- Unexplained weight loss
- Tiredness
- Fever
