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Extracorporeal shock wave lithotripsy (ESWL) treatment has been used at Department of Urology, University Hospital» Osijek «, Croatia, since July 1988. Until December 2001 seven thousand and eight hundred patients underwent ESWL for urinary stones, 68 of them were children (0.87%). Sixty-eight children aged 4 to 15 years (average 10.14 years) underwent ESWL. They were treated for the total of 91 stones: 35 (38.46%) caliceal, 23 (25.27%) in pyelon, 7 (7.69%) in pyeloureteric segment and 14 (15.38%) ureteral. Staghorn calculi were found in 6 (6.59%) patients and multiple stones (four or more stones in the same kidney) in 6 (6.59%). There was total of 95 ESWL sessions performed in 68 patients (1.39 session per patient). Fifty-six patients (82.35%) without residual stones found at the control plain film and sonography of urinary tract were considered» stone free «. Addition of 5 patients with clinically insignificant residual fragments (less than 4 mm) increases overall success rate to 89.70%. ESWL is a simple, safe and effective procedure in the management of urolithiasis in childhood. Clinical experience of our institution confirms ESWL as the first line treatment for kidney stones in the pediatric age patients.