Peer-reviewed veterinary case report
Horse has trouble urinating due to growth on penis
By Gardiner, David W et al.·Published in Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·2008·Colorado State University Veterinary Diagnostic Laboratory, United States·View original on PubMed →
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Original publication title: Fibropapilloma of the glans penis in a horse.
- Species:
- horse
Plain-English summary
An 18-year-old Arabian stallion was brought in because he was having trouble urinating, a condition known as stranguria. Upon examination, the vet found multiple smooth, grayish-pink growths around the tip of his penis. To treat this, the vet performed a partial amputation of the affected area and sent the tissue for testing. The results showed that the growths were fibropapillomas, which are benign tumors, and not a more serious condition. After the procedure, the stallion was expected to recover well.
People also search for: horse urination problems · stallion penis growths · fibropapilloma treatment in horses
Abstract
An 18-year-old Arabian stallion was presented for recent onset of stranguria. Physical examination of the distal portion of the glans penis revealed multiple, smooth, glistening, grayish-pink, variably sized, exophytic, nodular masses circumferentially surrounding the external urethral orifice. Partial penile amputation was performed, and the entire specimen was submitted for histological evaluation. Microscopically, the masses consisted of abundant amounts of loosely arranged fibrovascular stroma with low numbers of spindloid to stellate fibrocytes. The overlying epithelium was mildly to moderately hyperplastic with short anastomosing rete ridges (pseudoepitheliomatous hyperplasia). The lesion was diagnosed as fibropapilloma because of features similar to bovine penile fibropapilloma including anatomical location, gross appearance, and histological characteristics. A sarcoid was considered but negated as the lesion lacked the classical streaming and interlacing spindle cell population, "picket-fence" appearance at the epithelial interface, and long, thin, dissecting rete ridges typical of most equine sarcoids. Polymerase chain reaction for the Bovine papillomavirus-1 and Bovine papillomavirus-2 E5 gene and for Equine herpesvirus 1, 3, and 4 was negative on formalin-fixed tissue specimens.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/18987237/