Management of Encrusted Ureteral Stent with Mini Percutaneous Nephrolithotomy in Patient with Kidney Transplantation

Ureteric stents has been widely used in kidney transplantation practice to decrease major urologic complications. However ureteral stenting is associated with some specific complications in patients with kidney transplantation. A case of a renal transplantation patient whose ureteral stent was heavily encrusted is reported. A 12-year-old boy with end stage renal disease secondary to posterior urethral valve received a cadaveric renal transplantation. A ureteral double J stent was placed peroperatively. The patient was anticoagulated with low molecular weight heparin postoperatively. Stent encrustation was noticed during cystoscopy and the stent could not be removed. Following cystolithotripsy, the kidney stones and ureteric stents were removed successfully with mini percutaneous nephrolithotomy. The removal of an encrusted ureteric stent is always a urological challenge. The complication risk is even higher in patients receiving anticoagulation therapy and with kidney transplantation. Mini percutaneous nephrolitotomy techniques can be employed successfully with a lower complication risk. Selective stenting is preferred in our clinic to avoid the specific complications of ureteric stents.