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Kidney Cancer

Kidney Cancer Symptoms and Causes

Kidney cancer forms in the lining of tiny tubes inside your kidneys. It happens most often in people over 40. Risk factors include smoking, having certain genetic conditions and misusing pain medications over an extended period of time.

Kidney cancer symptoms are rare in its early stages. In the later stages, kidney cancer 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; fatigue and intermittent fever.

It's not clear what the causes of kidney cancer are. Doctors know that kidney cancer begins when some kidney cells acquire mutations in their DNA. The mutations tell the cells to grow and divide rapidly. The accumulating abnormal cells form a tumor that can extend beyond the kidney. Some cells can break off and spread (metastasize) to distant parts of the body.