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Intracranial malignant peripheral nerve sheath tumor variant: an unusual neurovascular phenotype sarcoma case invading through the petrous bone.

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BACKGROUND Intracranial malignant peripheral nerve sheath tumor (MPNST) is exceedingly rare. Previously reported cases of intracranial MPNST have been associated with development within a prominent cranial nerve. METHODS This is the first report of an MPNST with both nerve sheath and vascular

[A case of metastatic intracerebral malignant schwannoma].

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A 53 year old male complaining of headache and left hemiparesis was referred to our hospital on November 11, '89. He had no evidence of von Recklinghausen's disease. He had been operated on because of a well circumscribed tumor in the left paravertebral muscle on July 11, '87, and metastasis in the

Malignant peripheral nerve sheath tumor of the cauda equina with craniospinal metastasis.

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Intradural spinal malignant peripheral nerve sheath tumors (MPNST) are extremely rare, with only 20 adult patients reported to our knowledge, and only four primary tumors arising from the cauda equina. A 49-year-old man presented with back pain, constipation, and lower extremity weakness and was

Malignant peripheral nerve sheath tumor of the abducens nerve and a review of the literature.

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BACKGROUND Malignant peripheral nerve sheath tumors are rare, and intracranial occurrences are even more rare. Treatment strategies have varied widely. This article reports the first case of a malignant peripheral nerve sheath tumor of the abducens nerve and provides a literature review that

Malignant peripheral nerve sheath tumor in the anterior skull base associated with neurofibromatosis type 1--case report.

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A 36-year-old man presented with a tumor in the anterior skull base manifesting as headache and visual disturbance. Neurofibromatosis type 1 (NF-1) was identified in early childhood in the patient, and also in his father. Subtotal excision of the tumor was performed, leaving the portion extending

Malignant peripheral nerve sheath tumor of the occipital region: case report.

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OBJECTIVE A rare case of a malignant peripheral nerve sheath tumor of the occipital region is presented. The role of postoperative radiotherapy in such cases is reviewed. METHODS A 36-year-old man presented with a small spongy swelling in the posterior aspect of the cranium since childhood. The

Malignant Peripheral Nerve Sheath Tumor of the C2 Nerve Root: Case Report.

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Here we present the case of a 36-year-old man who was found to have a symptomatic malignant neural sheath tumor growing from the C2 nerve root following a period of progressively worsening headaches. The patient was successfully treated with surgical resection resulting in resolution of cranial

Catecholamine-secreting malignant schwannoma in a patient with multiple intracranial aneurysms. Case report.

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A case is reported of malignant schwannomatosis (malignant transformation of von Recklinghausen's disease) with catecholamine production in a patient with multiple intracranial aneurysms. The patient had a history of episodic hypertension and elevated levels of catecholamines in the serum and

Malignant peripheral nerve sheath tumor of the nasal cavity and nasopharynx in a child: A case report.

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Malignant peripheral nerve sheath tumors (MPNSTs) are rare neoplasms with only a few reported cases affecting the nasal cavity, paranasal sinuses, and anterior skull base.A 12-year-old girl with a mass in her nose was admitted to the Department of

Five-Year-Old Boy With Behavioral Changes and Papilledema.

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A 5-year-old boy had initial symptoms of behavioral changes, nausea, vomiting, headache, weight loss, and progressive vision failure. Brain MRI revealed abnormal signal intensity in both optic nerves, the optic chiasm, the right medial temporal lobe, and tissues surrounding the right supraclinoid

[Multiple malignant intracerebral schwannomas in von Recklinghausen's disease--report of a case].

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Intracerebral schwannoma is very rare, and only nine cases of solitary intracerebral schwannoma have been reported since the first description by Gibson et al, in 1966. This report is the first case of multiple intracerebral schwannomas in Japan. Intracranial extracerebral schwannomas in von

Sellar surprises: a single centre experience of unusual sellar masses.

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Most common incidentally detected sellar-suprasellar region (SSR) masses are pituitary adenomas, followed by craniopharyngioma, rathke's cleft cyst, hypophysitis, and meningioma. Besides these, certain unusual SSR lesions sometimes present as diagnostic challenges, where diagnosis is

Malignant sinonasal epithelioid schwannoma.

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Malignant schwannomas are rare neoplasms that are seldom found in the head and neck. Few cases have been reported involving paranasal sinuses and none of them was of the "epithelioid" type. In this report, an unusual case of epithelioid malignant schwannoma involving the maxillary sinus, nasal

Vestibular schwannoma with malignant transformation: a case report.

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We describe a rare case of malignant transformation in a vestibular schwannoma in a 33-yr-old woman. She presented herself with headache, tinnitus, and hearing loss and underwent posterior fossa explorations three times during the short period of 3 months. The clinicopathological features of the

Radiation-induced peripheral malignant nerve sheath tumor arising from vestibular schwannoma after linac-based stereotactic radiation therapy: a case report and review of literatures.

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In recent years the use of stereotactic radiation for vestibular schwannomas has increased worldwide. However, malignant transformation associated with radiation, although uncommon, has been reported in recent publications. We present a case of the 34 year-old female who had left vestibular

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