Dissolution of Cystine Calculi by Pelviocaliceal Irrigation with Tromethamine-E

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Abstract
We report 3 cases of cystine calculi. The stones were dissolved by pelviocaliceal irrigation with tromethamine-E, performed either through a percutaneous nephrostomy tube or ureteral catheters. The 25, 27 and 37-day courses of irrigation were well tolerated by all patients. Complications included a single asymptomatic urinary tract infection that required antibiotic therapy and transient hematuria due to catheter irritation. Our experience demonstrates that cystine calculi, including staghorn, can be dissolved by tromethamine-E irrigation, thereby obviating the need for surgical intervention.