Fluoroscopically guided retrograde replacement of ureteral stents = Sostituzione retrograda con guida fluoroscopica degli stent ureterali

Purpose. We assessed the feasibility Of fluoroscopically guided transurethral replacement of ureteral stents as an alternative to cystoscopy. Materials and methods. Over the last year, we replaced 27 double-J ureteral stents in 20 patients (10 men and 10 women; mean age 67.7 years, range 43-83); 15/20 patients had a native kidney, 3/20 had a transplanted kidney and 2/20 had a ureteroileal conduit. The procedures were performed in the angiography suite with the patient under sedation. All stents were grasped with a gooseneck snare under fluoroscopic control, and the distal end was withdrawn just outside the urethra; then a wire was advanced through the stent lumen and positioned in the renal pelvis. The stent was then removed and replaced with a new double-J stent. Results. The procedures were successful in 26/27 cases. We observed 7 cases of mild haematuria that resolved spontaneously. During follow-up (1-16 months, mean 6.7), stent obstruction occurred in 4 cases, requiring an additional retrograde replacement. Conclusions. Transurethral fluoroscopically guided retrograde replacement of dysfunctioning ureteral stents is an effective and safe alternative to cystoseopy.