Clinical neurology and neurosurgery
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A spinal cord ependymoma with syringomyelia is presented. The pathogenesis of syrinx formation, associated with intramedullary tumors is not fully understood. ⋯ Protein analysis of fluid specimens showed the fluid in tumor-associated syrinx to be an exudate. This strongly indicates that, in this case, intramedullary tumor-associated syringomyelia is based on disruption of the blood-brain barrier.