Long-Term Followup in Patients with Cystine Urinary Calculi Treated by Percutaneous Ultrasonic Lithotripsy

Abstract

From February 1983 through 1986, 15 patients (17 renal units) with cystine urinary lithiasis were treated by percutaneous ultrasonic lithotripsy. Three patients were lost to followup. Of the 13 renal units in the remaining 12 patients 7 (54 percent) had retained stone fragments and 6 (46 percent) were free of stones. While on medical management 7 of the 13 renal units (54 percent) had new stones, 5 (38 percent) remained unchanged and in 1 (8 percent) the retained stones dissolved. The rate for reoperations was 43 percent for the group with retained stones (3 of 7) and 17 percent for the group that was free of calculi after percutaneous ultrasonic lithiotripsy (1 of 6). Our study suggests that the optimal treatment with percutaneous ultrasonic lithotripsy should result in a patient who is free of stones.