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 classified in more specific categories, e.g., ganglioneuroma, neurilemoma, pseudoneuroma, and others. [neuro- + G. -oma, tumor]

- acoustic n. SYN: vestibular schwannoma.

- amputation n. SYN: traumatic n..

- n. cutis neurofibroma of the skin.

- false n. SYN: traumatic n..

- fibrillary n. SYN: plexiform neurofibroma.

- Morton n. SYN: Morton neuralgia.

- plexiform n. SYN: plexiform neurofibroma.

- n. telangiectodes a neurofibroma with a conspicuous number of blood vessel s, some of which have unusually large lumens (in proportion to the thickness of the walls).

- traumatic n. the nonneoplastic proliferative mass of Schwann cells and neurites that may develop at the proximal end of a severed or injured nerve. SYN: amputation n., false n., pseudoneuroma.

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neu·ro·ma n(y)u̇-'rō-mə n, pl -mas also -ma·ta -mət-ə

1) a tumor or mass growing from a nerve and usu. consisting of nerve fibers

2) a mass of nerve tissue in an amputation stump resulting from abnormal regrowth of the stumps of severed nerves called also amputation neuroma

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n.

any tumour derived from cells of the nervous system. Such tumours are now usually categorized more specifically (e.g. neurofibroma, neurilemmoma). An acoustic neuroma is a slow-growing benign tumour of the sheath of the vestibular branch of the vestibulocochlear nerve that arises in the auditory canal. It progresses to cause tinnitus and hearing loss.

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neu·ro·ma (n-roґmə) [neur- + -oma] a tumor growing from a nerve or made up largely of nerve cells and nerve fibers. Many lesions formerly called neuromas are now given more specific names such as ganglioneuroma, neurilemoma, or neurofibroma. neuromatous adj