Urinary stone formation in children with prenatally diagnosed uropathies

Among a series of 312 patients with prenatally diagnosed uropathies, 4 male children developed urinary calculi at ages varying from 2 to 5 years. All had upper urinary tract dilatation not associated with vesicoureteric reflux or with renographically defined obstruction; 3 followed Proteus urinary infections. Strategies for prevention are discussed.