PARAURETERAL CALCULI CAUSED BY URETEROSCOPIC PERFORATION

Objectives. Ureteroscopy has become an effective and safe procedure fo r treatment of ureteral calculi. Formation of strictures are considere d long-term complications with a low incidence. This report focuses on the incidence of strictures in cases of calculi pushed or flushed ret roperitoneally alongside the ureter because of iatrogenic ureteral per foration. Methods. Fifteen consecutive patients with paraureteral calc uli caused by ureteroscopic perforation were observed. An excretory ur ogram was performed after a mean of 22.5 months, with a range of 9 to 54 months. In all patients, a stent was placed for 3 to 41 days (mean, 13.5 days) and antibiotics were administered between 3 and 5 days pos toperatively. Results. Only 1 patient of 15 with a short stricture of the distal ureter was observed. The stricture was successfully treated by endoscopic ureterotomy, balloon dilation, and transient placement of a ureteral stent. Conclusions. Paraureteral calculi caused by urete ral perforation are a minor complication of ureteroscopy, which rarely lead to formation of strictures. Removal of paraureteral calculi by e nhanced endoscopic procedures or open surgery is not required.