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  • Title: Intramedullary epidermoid cyst in the thoracic spine of a dog.
    Author: Lipitz L, Rylander H, Pinkerton ME.
    Journal: J Am Anim Hosp Assoc; 2011; 47(6):e145-9. PubMed ID: 22058362.
    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.
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