A case of acute posttraumatic myelopathy resulting from hemorrhage into synovial cysts bilaterally at the C-6, C-7 facet joints is presented. The pathogenesis of synovial cysts remains unclear, although reports in the literature have implicated trauma leading to cyst enlargement. Hemorrhage into the cavity of the synovial cysts resulted in epidural compression of the spinal cord in this patient. Because spinal synovial cysts cannot be unequivocally diagnosed preoperatively, other more common conditions must be considered in the differential diagnosis. Radiographic analysis including plain films, computed axial tomography, and metrizamide myelography are of value in establishing a neurological diagnosis. Surgical decompression and excision of the lesion may result in significant neurological improvement.
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http://dx.doi.org/10.1227/00006123-198702000-00020 | DOI Listing |
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