Subependymoma of the thoracolumbar cord

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Abstract
✓ Subependymomas are benign, usually asymptomatic, intraventricular tumors, the origin of which remains controversial. Spinal cord subependymomas are rare; a literature review yields 10 previous cases which are critically appraised in this report. A case of thoracolumbar intramedullary subependymoma is reported, and the histology, ultrastructure, and pre- and postoperative management are reviewed. Awareness that subependymomas may occur as a separate entity in the spinal cord should lead to increased frequency of diagnosis and a better understanding of the biological behavior of these tumors.