Kidney cancer is a disease that starts in the kidneys. It happens when healthy cells in one or both kidneys grow out of control and form a lump (called a tumor).
Renal cell carcinoma is the most common type of kidney cancer in adults.
Low back pain or pressure on one side that does not go away. A mass or lump on the side or lower back. Fatigue. Loss of appetite or unexplained weight loss.
You may call them simply doctors. But most doctors have extra expertise in one type of medicine or another. In fact, there are several hundred medical specialties and subspecialties. Here are the most common types of doctors you'll likely see.