Table 1. Types of intramedullary spinal cord tumors.

Tumor class	Associated tumors
Neuroepithelial tissue	Astrocytic  • Astrocytoma  • Glioblastoma Embryonal  • Primitive neuroectodermal Ependymal  • Ependymoma  • Subependymoma Mixed glioma Neuronal and mixed neuronal-glial  • Gangliocytoma  • Ganglioglioma  • Ganglioneuroblastoma Oligodendroglial  • Oligodendroglioma Uncertain origin  • Polar spongioblastoma
Spinal nerves	Neurofibroma Schwannoma
Nonmeningothelial, mesenchymal	Hemangioblastoma Lipoma Melanoma Sarcoma
Germ cell tumors	Germinoma Teratoma
Cysts and tumorlike lesions	Dermoid Epidermoid
Hematopoietic neoplasms	Primary central nervous system lymphoma (microglial)
Metastatic tumors and other rare neoplasms