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 ?
The overall incidence of malignant schwannomas was 0.
05); and d) an increased incidence of malignant schwannomas of the peripheral nerves with a positive trend (p [less than or equal to] 0.
Malignant schwannoma associated with von Recklinghausen's neurofibromatosis.
In this article, we describe the clinical history of a young man affected by neurofibromatosis type 1 whose neurofibroma of the parapharyngeal space transformed into a malignant schwannoma.
Frozen-section examination of the tumor specimen confirmed the suspicion that it represented a neurofibroma that had transformed into a malignant schwannoma.
A final diagnosis of malignant schwannoma (neurofibrosarcoma) was arrived at in both cases.
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.
7) Malignant schwannomas have CT findings of low-density areas, compression of adjacent structures, pleural abnormalities, such as pleural effusions or pleural nodules, and metastatic pulmonary nodules.
9) For malignant schwannomas, wide excision with clear margins is recommended, although this can be difficult.
The researchers "also observed an insignificant increase in incidence of malignant schwannomas of the peripheral nerves in males, as well as hyperplasia of the olfactory epithelium in males and females.
Primary malignant schwannomas of the breast have also been reported.
Leiomyosarcomas can be confused histologically with other spindle cell sarcomas, especially fibrosarcomas, malignant schwannomas, and malignant fibrous histiocytomas.

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