Ureteroscopy and pyeloscopy in association with ultrasonic lithotripsy for extraction of ureteral stones has, in most instances, eliminated the need for open surgical intervention. Four ureteral stones were successfully extracted by the technique described using flexible cup biopsy forceps introduced through a Teflon sheath. This method was used when basket extraction, ureteroscopy, and other forms of endoscopic stone manipulation were unsuccessful. Two ureteral stones were removed by the transurethral route, and two were removed through a percutaneous nephrostomy tract. There has been little morbidity with this procedure, and patients have returned to normal activity within several days of hospital discharge.
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