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Extracorporeal shock wave lithotripsy (ESWL) uses shock waves to break a kidney stone into small pieces that can more easily travel through the urinary tract and pass from the body.
You lie on a water-filled cushion. X-rays or ultrasound tests are used to precisely locate the stone. High-energy sound waves pass through your body without injuring it and break the stone into small pieces.
Last Revised: April 28, 2011
Author: Healthwise Staff
Medical Review: Anne C. Poinier, MD - Internal Medicine & Tushar J. Vachharajani, MD, FASN, FACP - Nephrology
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