plexiform neuroma


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neuroma

 [noo͡-ro´mah]
a tumor or new growth largely made up of nerve cells and nerve fibers. adj., adj neurom´atous.
acoustic neuroma a benign tumor within the auditory canal arising from the eighth cranial (acoustic) nerve. Hearing loss begins in the teens or early 20's and may be surgically managed. Acoustic neuroma is a manifestation of Type II neurofibromatosis.
amputation neuroma traumatic neuroma occurring after amputation of a limb or other part.
neuroma cu´tis neuroma in the skin.
false neuroma one that does not contain nerve elements.
plexiform neuroma one made up of contorted nerve trunks.
neuroma telangiecto´des one containing an excess of blood vessels.
traumatic neuroma an unorganized bulbous or nodular mass of nerve fibers and Schwann cells produced by hyperplasia of nerve fibers and their supporting tissues after accidental or purposeful sectioning of the nerve.

plex·i·form neu·ro·fi·bro·ma

a type of neurofibroma, representing an anomaly rather than a true neoplasm, in which the proliferation of Schwann cells occurs from the inner aspect of the nerve sheath, thereby resulting in an irregularly thickened, distorted, tortuous structure; in some instances, the process extends along the course of the nerve and may eventually involve the spinal roots and the spinal cord; seen most frequently in neurofibromatosis.

plexiform neuroma

[plek′sifôrm]
Etymology: L, plexus, braided, forma, form; Gk, neuron, nerve, oma, tumor
a neoplasm composed of twisted bundles of nerves. Also called Verneuil's neuroma.
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Plexiform neuroma

plex·i·form neu·ro·fi·bro·ma

(plek'si-fōrm nūr'ō-fī-brō'mă)
A type of lesion, representing an anomaly rather than a true neoplasm, in which the proliferation of Schwann cells occurs from the inner aspect of the nerve sheath; seen most frequently in neurofibromatosis.
Synonym(s): plexiform neuroma.