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JOURNAL OF THE AMERICAN ANIMAL HOSPITAL ASSOCIATION
Volume 47, Issue 6, Pages E145-E149Publisher
AMER ANIMAL HOSPITAL ASSOC
DOI: 10.5326/JAAHA-MS-5583
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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. (J Am Anim Hosp Assoc 2011; 47:e145-e149. DOI 10.5326/JAAHA-MS-5583)
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