Primary obstructive megaureter: cutting balloon endo-ureterotomy.

In this video we will demonstrate endo-ureterotomy using a cutting balloon for vesico-ureteric junction (VUJ) dilatation and stenting of the primary obstructive megaureter.For the technique, a 0.014 inch guide-wire is endoscopically inserted through the VUJ and allowed to curl in the megaureter. A 3 mm atherotome-bladed cutting balloon is inflated with iohexol contrast solution. Under fluoroscopy or cystoscopically, the stenotic VUJ segment is observed to open and post-dilated with a 4 mm simple balloon before JJ stent placement for six weeks.This video demonstrates the equipment and technique of VUJ endo-ureterotomy using a cutting balloon and stenting of the primary obstructive megaureter.Where intervention for the primary obstructive megaureter is indicated, we propose VUJ endo-ureterotomy as the first line treatment.