Uric acid stone formation in a patient after kidney transplantation--metabolic and therapeutic considerations.

The formation of urinary calculi following renal transplantation is a rare event with a frequency of less than 1% (4). Although 133 cases were described up to 1988, only 5 of these had pure uric acid stones (3). We report a case in which an excessive purine-rich diet probably caused the stone formation. Three modalities of treatment were used, percutaneous nephrolithotripsy, shock wave lithotripsy (ESWL) and chemolysis.