Peridontoid Synovial Cyst Causing Cervico-medullary Compression

     Anthony M Kaufmann, William C Halliday, Michael West, Derek Fewer and Ian Ross

Abstract:   Background: Periodontoid synovial cysts are rare lesions which may produce symptomatic cervico-medullary compression. Method: We report such a patient, whose progressive neurological deterioration required surgical treatment by transoral odontoidectomy and decompression. Results: The diagnostic and theraputic interventions are described, including a lumbar puncture which precipitated a transient loss of consciousness and respiratory arrest. Surgery achieved clinical improvement, without complications or need for operative stablization. Detailed neuropathology is presented, as well as a literature review. Conclusion: Appropriate neuroradiological assessment is required in patients with suspected cervico-medullary compression, and symptomatic periodontoid synovial cysts may respond well to transoral surgical decompression.

Can. J. Neurol. Sci. 1996; 23: 227-230