Spinal schwannoma

Schwannomas originate from the dorsal spinal nerve roots, and can also produce subchondral infiltration when they grow concentrically. This situation is more common in rhomboid neurofibromas. Brachial plexus or lumbar plexus neurofibromas can invade the central dura along multiple nerve roots. In contrast, Schwann cell tumors near the spine are usually located outside the epidural when they expand into the spinal canal. About 2.5% of spinal schwannomas are malignant, and at least half of these cases occur in patients with multiple neurofibromatosis.

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