Knotted ureteral stent: A minimally invasive technique for removal

Purpose: We describe a useful technique for untying a knotted ureteral catheter. Materials and Methods: An Amplatz super stiff guide wire was advanced through the lumen of the stent and with uniform force the knot was untied. Results: The knot was untied and the stent was removed. A nephrostomy tube or other more invasive techniques for removal were avoided. Conclusions: An Amplatz super stiff guide wire passed retrograde via the ureteral stent lumen should be considered as a valid alternative to percutaneous removal of a knotted ureteral stent.