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Updated: Aug 6, 2026

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A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction
Published on: December 20, 2014
Bilateral ureteral reconstruction with U-shaped ileal interposition segment
Federico Eskenazi1, Juan Pablo Dugarte2, Monish Aron2
1Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Summary
This study presents a robotic ureteral reconstruction technique using ileal interposition for patients with complex ureteral strictures. The novel approach successfully restored urinary continuity in a patient with extensive retroperitoneal fibrosis.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Robotic Surgery
Background:
- Retroperitoneal fibrosis can cause ureteral strictures, leading to kidney damage.
- Complex cases involving vascular encasement pose significant surgical challenges.
- Previous treatments may include nephrostomy dependence.
Purpose of the Study:
- To describe a novel robotic technique for bilateral ureteral reconstruction.
- To address ureteral strictures in the context of retroperitoneal fibrosis and vascular encasement.
- To present a case study of successful ileal interposition.
Main Methods:
- Robotic-assisted surgery was employed for bilateral ureteral reconstruction.
- A U-shaped ileal segment was used for interposition.
- The technique involved ureteral dissection, spatulation, and mucosa-to-mucosa anastomosis to the ileal segment.
- Double-J and single-J stents were utilized for urinary diversion and support.
Main Results:
- Successful reconstruction of bilateral mid-ureteral strictures was achieved.
- The patient, previously dependent on nephrostomy, had restored urinary continuity.
- The robotic approach facilitated precise dissection and anastomosis in a challenging anatomical field.
Conclusions:
- Robotic ureteral reconstruction with U-shaped ileal interposition is a viable option for complex ureteral strictures.
- This technique can effectively manage ureteral reconstruction in patients with retroperitoneal fibrosis and vascular encasement.
- The described method offers a minimally invasive solution for challenging urological reconstructions.
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