Background: A 4-year-old rhesus macaque presented with acute, progressive paresis of the extremities.
Methods: A complete blood count, serum biochemical analysis, neurologic exam and necropsy were performed.
Results: The clinical, histopathological, and immunohistochemical findings confirmed a high-grade intramedullary glial tumor of the spinal cord that was most consistent with an ependymoma.
Conclusions: We describe a case of a naturally occurring spontaneous spinal cord neoplasia in a non-human primate.
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