Rare Fibroepithelial Polyp Extending Along the Ureter: A Case Report

Abstract

Background: Fibroepithelial polyps of the urinary tract are rare tumors, and their occurrence in the upper urinary tract is highly unusual.

Case report: This study reports a 9-year-old boy who presented to our clinic with complaints of unilateral flank pain and macroscopic hematuria. The direct urinary system graph did not show stone formation; therefore, magnetic resonance urography was performed. This revealed a filling defect in the left proximal ureter. On cystoscopy, a polyp was seen in the orifice of the left ureter, extending along the ureter. The polyp was resected by laser ablation and removed from the ureter. Histopathologic examination revealed a fibroepithelial polyp comprising fibrovascular stroma covered with transitional epithelium.

Conclusion: Although extremely rare, a fibroepithelial polyp should be considered in the differential diagnosis when a young patient presents with flank pain and macroscopic hematuria. Endoscopic procedures may be the treatment of choice for polyps located in the upper ureter.

Keywords: Children; fibroepithelial; polyps; urinary tract.

Figure 1. The filling defect in the left proximal ureteropelvic junction on magnetic resonance urography.

Figure 2. The polyp from the orifice (a), the polyp in the ureter (b), the resected polyp (10 cm) (c), transitional epithelium covering the fibrovascular stroma (d) (H&E, x100).