New technique of ureteral stent placement for impacted ureteral calculus: the glidewire loop technique.

Impacted ureteral stones pose a challenge during retrograde ureteral stenting. Multiple attempts to bypass the obstruction with conventional guide wires often fail and may result in perforation of the ureter. We describe a new, simple approach to overcome this common problem by utilizing a retrograde glidewire loop technique. The technique described allows safe and successful bypassing and stenting of ureteral obstruction.