case_images: PMC9842854_01
case_images: Left knotted ureteric stent on abdominal x-ray.
case_images: gr1.jpg
case_images: PMC9842854_01_gr1.jpg
case_images: fig1
case_images: Xray demonstrated a knot at the proximal coil of the stent, which was pulled down into the proximal ureter (Fig. 1.).
case_images: Attempted retrieval of knotted stent with 6 x 40mm PET balloon.
case_images: gr2.jpg
case_images: PMC9842854_01_gr2.jpg
case_images: fig2
case_images: An attempt to dislodge the knotted stent up into the renal pelvis by inflating a 6 x 40mm balloon distal to the knot and pulling it up was also unsuccessful (Fig. 2.) Finally, a "loop-snare" technique was utilized by threading a Glidewire through the superior loop of the knot, snaring the wire and retracting the snared wire which ultimately untied the knot and retrieved the stent (Fig. 3.).
case_images: Retrieval of knotted stent with snare-wire technique.
case_images: gr3.jpg
case_images: PMC9842854_01_gr3.jpg
case_images: fig3
case_images: An attempt to dislodge the knotted stent up into the renal pelvis by inflating a 6 x 40mm balloon distal to the knot and pulling it up was also unsuccessful (Fig. 2.) Finally, a "loop-snare" technique was utilized by threading a Glidewire through the superior loop of the knot, snaring the wire and retracting the snared wire which ultimately untied the knot and retrieved the stent (Fig. 3.).