Cervical diastematomyelia. Report of a case and review of a rare congenital anomaly.

Cervical diastematomyelia is a rare congenital abnormality. To our knowledge, only 18 cases have been reported. The present case was highly unusual in that it occurred in an adult. Other clinical features in the present case included symptoms that began after trauma and the presence of other associated congenital anomalies. The diastematomyelia was identified with computed tomographic metrizamide myelography and magnetic resonance imaging. The patient's neurologic deficits improved with surgery.