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.
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.