INTRODUCTION
Fibroepithelial polyps (FP) are rare benign tumors of mesodermal origin and occurring in human with a ureter incidence of 85% (Williams et al. 2002, Ludwig et al. 2015). Most of the human patients show one polyp and, in several cases, both ureters are affected (Ludwig et al. 2015). FP typically present as smooth, mobile, and pedunculated masses in the ureter (Lam et al. 2003). They cause ureteral obstruction with consequent clinical symptoms: flank or lower abdominal pain, macroscopic hematuria, irritating bladder symptoms, including frequency and urgency when it protrudes into the bladder (Lam et al. 2003, Ludwig et al. 2015, Kumar et al. 2022, Kim et al. 2022). Cases of FP have been described in cats and dogs (Reichle et al. 2003, Grant & Troy 2014, Etzioni et al. 2020) and in a 4-month-old foal as well (Jones et al. 1994).
As far as the authors are aware there are no case reports of ureteral fibroepithelial polyps in adult horses. Only a description of a chronic polypoid cystitis in a mare was found, where the clinical symptoms were similar (Rosales et al. 2017).
In this article, the authors present hematuria related to a right sided ureteral inflammatory polyp and the endoscopic polypectomy in a gelding.