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Kidney Stone  

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Kidney stones are one of the most common and painful kidney disorders. About 10% of people will develop a kidney stone at some point in their lives. For many, stones become a chronic problem. People who get one stone are more likely to develop others.

The kidneys, each about the size of a fist, are located in the lower back. They are connected to the bladder by narrow tubes called ureters. The kidneys act as filters for the bloodstream. They catch needed substances and return them to circulation. They also dispose of unneeded substances in urine. Urine col