Ultrasonic renal lithotripsy. Single-stage percutaneous technique and adjuvant radiological procedures.

Single-stage percutaneous ultrasonic disintegration and removal of renal calculi was attempted in 67 patients (80 calculi) and proved successful in 65 (97%). Extraction was achieved during the initial session in 52 patients (78%) and required either an adjuvant radiological procedure or repeat nephroscopy in 13. Single-stage removal combines the skills of the radiologist and urologist and is successful in the majority of cases.