neurofibroma

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Related to Malignant Schwannoma: malignant meningioma

neurofibroma

 [noor″o-fi-bro´mah]
a tumor of peripheral nerves due to abnormal proliferation of Schwann cells; called also fibroneuroma.

neu·ro·fi·bro·ma

(nū'rō-fī-brō'mă),
A moderately firm, benign, encapsulated tumor resulting from proliferation of Schwann cells in a disorderly pattern that includes portions of nerve fibers; in neurofibromatosis, neurofibromas are multiple.
Synonym(s): fibroneuroma

neurofibroma

/neu·ro·fi·bro·ma/ (-fi-bro´mah) a tumor of peripheral nerves due to abnormal proliferation of Schwann cells.

neurofibroma

(no͝or′ō-fī-brō′mə, nyo͝or′-)
n. pl. neurofibro·mas or neurofibro·mata (-mə-tə)
A benign tumor of the peripheral nerve sheath, usually nonencapsulated and composed of a mixture of cell types including Schwann cells and fibroblasts.

neurofibroma

[noo͡r′ōfībrō′mə] pl. neurofibromas, neurofibromata
Etymology: Gk, neuron + L, fibra, fiber; Gk, oma, tumor
a fibrous tumor of nerve tissue resulting from the abnormal proliferation of Schwann cells. Multiple growths in the peripheral nervous system are often associated with abnormalities in other tissues. See also neurofibromatosis.
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Neurofibroma

neu·ro·fi·bro·ma

(nūr'ō-fī-brō'mă)
A benign, encapsulated tumor resulting from proliferation of Schwann cells.
Synonym(s): fibroneuroma.

Neurofibroma

A soft tumor usually located on a nerve.
Mentioned in: Neurofibromatosis

neu·ro·fi·bro·ma

(nūr'ō-fī-brō'mă)
A moderately firm, benign, encapsulated tumor resulting from proliferation of Schwann cells in a disorderly pattern that includes portions of nerve fibers.

neurofibroma (nyoo´rōfībrō´mə),

n (neurogenic fibroma, perineural fibroblastoma), 1. a benign neoplasm characterized by the various cells of a peripheral nerve (axon cylinders, Schwann cells, fibroblasts).
n 2. a connective tissue tumor of the nerve fiber fasciculi. Formed by the proliferation of the perineurium and endoneurium. See also neurilemoma.
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Neurofibroma.

neurofibroma

a tumor of peripheral nerves due to abnormal proliferation of Schwann cells. In cattle neurofibromas appear as subcutaneous swellings. They seem to be transmitted from a cow to her calf. Called also fibroneuroma, schwannoma.
References in periodicals archive ?
7 Animals bearing peripheral nerve malignant schwannomas (a) Other sites Total (b) Dose, ppm (mg/kg bw) No.
6,7) In 25 to 70% of cases, malignant schwannoma is associated with neurofibromatosis.
Malignant schwannoma usually arises in the extremities, but it can affect any part of the body.
To the best of our knowledge, only four other cases of malignant schwannoma of the parapharyngeal space have been reported in the literature during the past 30-plus years.
However, it is well known that malignant schwannoma is usually resistant to both radio- and chemotherapy, although chemotherapy may play a role in the treatment of surgical failures.
2] be considered as a first-line choice as an adjuvant treatment following surgery or a first-line treatment for patients with an inoperable malignant schwannoma.
Malignant schwannoma located in the retroauricular region.
The appearance of a malignant schwannoma in the paranasal sinuses or nasal cavity--with (7) or without (8,9,11-13) von Recklinghausen's disease--is extremely rare.
6) One case of malignant schwannoma of the ethmoid sinus was associated with acquired immunodeficiency syndrome.
If a malignant schwannoma is not completely excised, local recurrence is known to occur within a relatively short period of time.
Malignant schwannomas of the paranasal sinuses are extremely uncommon tumors, as only 18 well-documented cases have been previously published in the English-language literature.
Malignant schwannomas can be differentiated from fibrosarcomas and malignant fibrous histiocytomas by immunoreactivity for S100 protein and electron microscopy.

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