Urinary obstruction secondary to an ossifying fibroma of the os penis in a dog.
A 13-year-old, 25-kg, castrated male border collie was referred for evaluation of pollakiuria, stranguria, and a decreased urine stream. A calcified periurethral mass near the caudal aspect of the os penis was identified on survey abdominal radiographs. A retrograde contrast urethrocystogram demonstrated that the mass was compressing the penile urethra. The mass was surgically resected. A histopathological diagnosis of an ossifying fibroma of the os penis was made. This report describes an atypical presentation of a rare tumor, an ossifying fibroma, that caused a urinary obstruction in a male dog. A review of the incidence, histopathological features, and behavior of ossifying fibromas is included.
Mirkovic
Tatjana K
TK
Departments of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
Shmon
Cindy L
CL
Allen
Andrew L
AL
D000818:Animals; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis* / Q000601:surgery; D004285:Dogs; D018214:Fibroma, Ossifying / Q000150:complications / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D008297:Male; D010412:Penile Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D016896:Treatment Outcome; D014524:Urethral Obstruction / Q000175:diagnosis / Q000209:etiology / Q000601:surgery / Q000662:veterinary*