148 About 5% of spinal tumors are intramedullary. In children, astrocytomas predominate, whereas in adults ependymomas predominate, with astrocytoma next in frequency, and hemangioblastomas a distant third. Tumors cannot be definitively differentiated, but may have features suggestive of a particular diagnosis (Table 148.1
Intramedullary Spinal Cord Lesions
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