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.