meningioma

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meningioma

[mə‚nin·jē′ō·mə]
(medicine)
A localized tumor composed of meningeal cells, involving the meninges and other central nervous system structures. Also known as meningothelioma.
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Lobrinus, "Primary pulmonary malignant meningioma with lymph node and liver metastasis in a centenary woman, an autopsy case," Virchows Archiv, vol.
The more aggressive varieties, the so-called 'atypical' and malignant meningiomas, present their own specific problems for treatment.
It can be argued that the distinction between a sarcoma and a malignant meningioma is trivial because of the poor prognosis portended in both diagnoses.
Other factors, such as the histological subtype, tumor site, age and gender of the patient seem to have no correlation with the hemorrhagic event [2,4-6], however some authors attribute greater risk of hemorrhage to the angiomatous and malignant meningiomas [1].

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