[Digital cystography in the evaluation of vesico-ureteral reflux in childhood].

The use of digital subtraction in voiding cystourethrography allows an accurate evaluation of the continence-micturition cycle. Fifty-two children with recurrent urinary tract infections were studied. The examination was easily performed, and it resulted useful in both detecting and characterizing vesicoureteral reflux. Even though it does not increase diagnostic sensitivity, digital voiding cystourethrography is useful in demonstrating the onset of vesicoureteral reflux, as related to the different phase of micturition. As far as radiation exposure is concerned, the technique, so far performed on children, appears to be a valid alternative to urodynamic studies.