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Spinal tumors

Intradural Spinal Tumors 4-10% rare Location, location, location: Intramedullary (within the cord): - Ependymoma (central, syrinx, hemosiderin capping, peritumoral cysts, scoliosis, bony remodeling) - Astrocytoma (eccentric, infiltrative, long cord segments, ill-defined margins. more common in children) - Hemangioblastoma (hyperintense, vascular) - Mets (a lot of edema) Mimics: - vascular lesion: cavernous malf, dural AVF, spinal cord infarct - inflammatory: demyeliation, transverse myelitis, spinal cord abscess Intradural, extramedullary (within the dural sac but outside cord): - Schwannoma (targetoid - T2 hyperintense rim and central area of low signal, lumbar cord, hemorrhage, vascular changes, cyst formation, fatty degeneration, most common intradural extramedullary tu) - Meningioma (dural tail, females 40-60, 2nd most common intradural extramedullary tu) - Neurofibroma - Paraganglioma - no symptoms - Ganglioneuroma, Ganglioglioma - Mets - Neurofibrosarcoma Mimics: lipoma, epidermid, dermoid, neurenteric cyst, arachnoid cyst Cauda equina: - Mixopapillary ependymoma: WHO Grade 1 lesion, young adult men, - Extramedullary: spinal paraganglioma (cap sign) - Intramedullary tumors All tu cause: T2 hyperintensity, Enlarged cord, Bone rmeodeling Extradural: - disk extrusion, - hematoma, - osteoblastoma, - mets