(redirected from Malignant Schwannoma)
Also found in: Dictionary, Thesaurus, Medical.
Related to Malignant Schwannoma: malignant meningioma


A tumor characterized by the diffuse proliferation of peripheral nerve elements. Also known as endoneural fibroma; myxofibroma of nerve sheath; neurofibromyxoma; perineural fibroblastoma; perineural fibroma.



a benign tumor that originates in membranes of peripheral nerves and is localized in any part of the body along the path of a nerve trunk. Neurofibromas most often affect the sciatic and intercostal nerves. The multiple occurrence of neurofibromas is called neurofibromatosis.

References in periodicals archive ?
Clinical-pathologic conference in cardiac surgery: malignant schwannoma of the heart.
As shown in Table 2, the incidence of malignant schwannomas of the peripheral nerves occurred with a positive trend (p [less than or equal to]0.
The term epithelioid malignant schwannoma has been applied to cases in which aggressive tumors are derived from nerve sheaths and contain tumor cells having visible cell borders, epithelial-type nests, and immunoreactivity for S100 protein, but not for keratin.
Malignant schwannoma is a highly aggressive tumor that carries a poor prognosis.
On macroscopic examination, the cut surface was grayish-white and exhibited focal myxoid areas, The lesion was diagnosed as a malignant schwannoma.
It should also be differentiated from a benign or malignant neoplastic lesion, such as a hemangioma, lymphoma, rhabdomyosarcoma, and malignant schwannoma.
Histologic examination of the surgically resected mass revealed a malignant schwannoma.
But he also noted that the heart tumours in rats - called malignant schwannomas - are similar to acoustic neuromas, a benign tumour in people involving the nerve that connects the ear to the brain, which some studies have linked to cell phone use.
INTRODUCTION: Nerve sheath tumours (NST) are a subclass of soft tissue neoplasms that include benign and malignant schwannomas and neurofibromas.
1) Other documented types of vulvar sarcoma include malignant fibrous histiocytomas, neurofibrosarcomas, liposarcomas, angiosarcomas, epithelioid sarcomas, and malignant schwannomas.
Malignant transformation to neurofibrosarcomas (Figs 18 a and b) and malignant schwannomas is extremely rare.

Full browser ?