Monday, October 27, 2008

What is a kidney stone?

A kidney stone is a hard mineral and crystalline material formed within the kidney or urinary tract. Kidney stones are a common cause of blood in the urine and often severe pain in the abdomen, flank, or groin. Kidney stones are sometimes called renal calculi. One in every 20 people develops a kidney stone at some point in their life.

The condition of having kidney stones is termed nephrolithiasis or urolithiasis.

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