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Updated: May 19, 2026

An Immature Murine Model of Reversible Unilateral Ureteral Obstruction

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Published on: April 4, 2025

[Bilateral ureteral polyps in children: a case report].

Peng-hao Sun¹, Wan-li Na, Yong-hao Nan

¹Department of Urology, China-Japan Union Hospital of Jilin University, Changchun, China.

Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences

|August 18, 2012

Summary

Fibroepithelial polyps, rare benign ureteral tumors, can cause urinary tract obstruction in children. Surgical removal, like polypectomy and pyeloureterostomy, offers an effective treatment with no major complications.

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Area of Science:

Pediatric Urology
Surgical Oncology
Nephrology

Background:

Fibroepithelial polyps are rare, benign tumors of mesodermal origin affecting the ureter, predominantly in children.
Common symptoms include hematuria and flank pain due to urinary tract obstruction.
The exact etiology remains unclear, with a higher incidence observed in boys, often affecting the proximal ureter and ureteropelvic junction.

Observation:

A case study of an 11-year-old boy presenting with bilateral fibroepithelial polyps causing ureteropelvic junction obstruction.
The patient experienced obstruction on the left flank requiring pyeloplasty and had a history of similar obstruction on the right flank five years prior.
Preoperative diagnosis of ureteral fibroepithelial polyps can be challenging.

Findings:

The patient underwent successful surgical intervention involving polypectomy and pyeloureterostomy for the left ureteropelvic junction obstruction.
The surgical procedure was completed without significant intraoperative or preoperative complications.
This case highlights the recurrent nature of fibroepithelial polyps in some pediatric patients.

Implications:

Polypectomy and pyeloureterostomy are effective treatment options for pediatric ureteral fibroepithelial polyps causing obstruction.
Early diagnosis and prompt surgical management are crucial for favorable outcomes in pediatric patients with ureteral tumors.
Further research into the etiology of fibroepithelial polyps may aid in developing targeted preventive or therapeutic strategies.