Cerebral Convexity Meningioma Definition


Cerebral Convexity Meningioma: A relatively common neoplasm of the central nervous system that arises from arachnoidal cells. The majority are well differentiated vascular tumors which grow slowly and have a low potential to be invasive, although malignant subtypes occur. Meningiomas have a predilection to arise from the parasagittal region, cerebral convexity, sphenoidal ridge, olfactory groove, and spinal canal. They tend to present in the fourth to sixth decades of life with signs indicative of a slowly progressive mass lesion. Specific clinical manifestations depend on the location of the tumor, but may include INTRACRANIAL HYPERTENSION, cranial neuropathies, ataxia, and other focal neurologic signs. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2056-7)

Synonym: angiomatous meningioma, angioblastic meningioma, xanthomatous meningioma, transitional meningioma, secretory meningioma, psammomatous meningioma, parasagittal meningioma, papillary meningioma, multiple meningioma, microcystic meningioma, meningotheliomatous meningioma, meningiomatosis, meningioma, malignant meningioma, intracranial meningioma, hemangiopericytic meningioma, hemangioblastic meningioma, fibrous meningioma, clear cell meningioma, benign meningioma.