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Updated: Aug 7, 2026
A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction
Published on: December 20, 2014
Ureteral fibroepithelial polyp in an owl monkey (Aotus nancymae)
A S Gozalo1, V J Hoffmann, L E Lambert
1National Institute of Allergy and Infectious Diseases/Comparative Medicine Branch, National Institutes of Health, SoBran Inc./Government Contractor, Building 14B South, Room 228, 9000 Rockville Pike, Bethesda, MD 20892 (USA). gozaloa@niaid.nih.gov
Abstract:
Ureteral fibroepithelial polyps are benign mesodermal tumors in humans that occur predominantly in the proximal ureter. During a routine necropsy of a wild-caught, research naïve, adult, male, Aotus nancymae, the left ureter just distal to the renal pelvis contained a pedunculated, lobulated neoplasm with a narrow stalk at the base projecting into the lumen. The left renal pelvis was found to be mildly dilated. The histologic characteristics of the ureteral mass were consistent with a fibroepithelial polyp. To our knowledge, this is the first report describing a ureteral fibroepithelial polyp in a nonhuman primate.
