Hybrid nerve sheath tumor of the spinal canal and neurofibromatosis-2, where the twain shall meet-a case report and review of literature.

Background: A hybrid nerve sheath tumor is a biphasic, benign neoplasm of peripheral nerve sheaths, consisting of combinations of neurofibroma, schwannoma, or perineurioma. These tumors were recognized only recently, in 2013; they commonly occur sporadically but rarely with syndromic associations, such as neurofibromatosis syndrome, Carney complex, and schwannomatosis. With an occurrence of 1 in every 33,000 individuals, neurofibromatosis type 2 is a rare autosomal dominant condition characterized by bilateral vestibular schwannomas.