Transurethral Removal of Large Ureteral and Renal Pelvic Calculi Using Ureteroscopic Ultrasonic Lithotripsy

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Abstract
Transurethral ultrasonic fragmentation of stones allows successful endoscopic removal of upper urinary calculi that otherwise would be considered too large to extract. Two large renal pelvic and 5 large ureteral stones were extracted using transurethral ureteropyeloscopy and ultrasonic lithotripsy. The stone is visualized first with the ureteropyeloscope, and then engaged in a basket and either fragmented or disintegrated with the ultrasonic transducer. Any remaining small stone fragments can be retrieved with a stone basket or forceps. There was little morbidity with this procedure and patients can return to normal activity after discharge from the hospital.