acoustic neurilemoma
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Acoustic neuroma — 1. A benign tumor that may develop on the hearing and balance nerves near the inner ear. The tumor results from an overproduction of Schwann cells small sheet like cells that normally wrap around nerve fibers like onion skin and help support the… … Medical dictionary
neurilemoma — SYN: schwannoma. [neurilemma + G. oma, tumor] acoustic n. schwannoma arising from cranial nerve VIII. Antoni type A n. relatively solid or compact arrangement of neoplastic … Medical dictionary
schwannoma — A benign, encapsulated neoplasm in which the fundamental component is structurally identical to a syncytium of Schwann cells; the neoplastic cells proliferate within the endoneurium, and the perineurium forms the capsule. The … Medical dictionary
neuroma — General term for any neoplasm derived from cells of the nervous system; on the basis of newer knowledge pertaining to cytologic and histologic characteristics, a variety of neoplasms, formerly placed in the general category of n., may now be… … Medical dictionary
