Late sequelae of the management of ureteral calculi with the ureterorenoscope.

We examined 42 patients 19 to 20 months after ureteral calculi had been removed with the ureterorenoscope. All 42 patients were asymptomatic and showed no evidence of an increased rate of urinary tract infection or hypertension. An excretory urogram in 38 patients demonstrated no abnormality related to the procedure, in particular no ureteral stenosis and renal scarring. Renal sonography in the remaining 4 patients likewise was normal. Reflux cystography revealed low grade (sterile) vesicoureteral reflux in 2 patients. In view of a 92 per cent success rate in 236 renoureteral units, with serious complications in only 2 per cent, the technique can be considered safe and effective.