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Related Experiment Video

Updated: Apr 12, 2026

A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis

A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis

Published on: May 14, 2013

Knotted stents: Case report and outcome analysis.

Min Su Kim¹, Ha Na Lee², Hokyeong Hwang³

¹Department of Urology, Seoul Medical Center, Seoul, Korea.

Korean Journal of Urology

|May 13, 2015

Summary

Knotted ureteral stents are rare and challenging to treat. A folded guidewire successfully removed a knotted stent percutaneously without anesthesia, offering a novel management approach.

Keywords:

Stents Ureter Urolithiasis

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Last Updated: Apr 12, 2026

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Published on: October 1, 2017

Area of Science:

Urology
Minimally Invasive Surgery

Background:

Knotted ureteral stents are a rare but difficult complication.
Fewer than 20 cases have been documented in medical literature.
Treatment options for knotted ureteral stents are limited.

Observation:

A case of a knotted ureteral stent is presented.
A folded Terumo guidewire was utilized for stent removal.
The procedure was performed percutaneously without the need for anesthesia.

Findings:

Successful percutaneous removal of a knotted ureteral stent using a folded guidewire.
Demonstration of a minimally invasive technique for managing this rare complication.
Guidewire manipulation proved effective in untangling the knotted stent.

Implications:

This technique offers a potential new, anesthesia-free treatment option for knotted ureteral stents.
Highlights the importance of innovative approaches in managing rare urological conditions.
Suggests further investigation into the use of specialized guidewires for stent removal.