Renal calculi in pediatric renal transplant recipients

The incidence of renal calculi in renal transplant recipients was reviewed. It is an infrequent problem, with an incidence less than 1%. In the pediatric population, only 8 cases had been reported in the literature since 1964. Of the 221 children transplanted at this institution from 1964 to 1989, only these 2 developed renal calculi. One case was related to hyperparathyroidism and the other to idiopathic hypercalcinuria. This represented a frequency of 0.9% which correlates closely with the reported incidence in the transplant population at large.