title: Intramedullary epidermoid cyst in the thoracic spine of a dog.
abstract: A 5 yr old female spayed mastiff was evaluated for a 3-4 mo history of paraparesis and 3 days of acutely worse paraparesis and incontinence. On magnetic resonance imaging, a spinal cord lesion was present at the ninth thoracic vertebra. The lesion was hyperintense on T2-weighted images (T2-W), and a hyperintense rim was present on T1-weighted postcontrast images. Histologic examination showed a cystic mass lined by squamous epithelial cells. Histopathologic diagnosis was an intramedullary epidermoid spinal cyst. Epidermoid cyst should be a differential diagnosis in young dogs with a myelopathy and an intramedullary spinal cord lesion on magnetic resonance imaging examination.
authors: Department of Medical Sciences, Veterinary Medical College of Wisconsin, Madison, WI, USA.
authors: Lisa
authors: L
authors: Lipitz
authors: Helena
authors: H
authors: Rylander
authors: Marie E
authors: ME
authors: Pinkerton
mesh_terms: D000818:Animals; D020863:Central Nervous System Cysts / Q000175:diagnosis / Q000662:veterinary*; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis* / Q000473:pathology; D004285:Dogs; D004814:Epidermal Cyst / Q000175:diagnosis / Q000662:veterinary*; D005260:Female; D008279:Magnetic Resonance Imaging / Q000662:veterinary; D013904:Thoracic Vertebrae