Extracorporeal shock wave lithotripsy and xanthine calculi in Lesch-Nyhan syndrome.

We report a case of Lesch-Nyhan syndrome (LNS) with urinary xanthine calculi. At eight years of age calculi in the renal pelvis were successfully disintegrated by extracorporeal shock wave lithotripsy (ESWL) without any complications. Follow-up sonography is very useful for management of patients with LNS, particularly when they are on allopurinol therapy.