meningioma /me·nin·gi·o·ma/ (mĕ-nin″je-o´mah) a benign, slow-growing tumor of the meninges, usually next to the dura mater, which may invade the skull or cause hyperostosis, and often causes increased intracranial pressure; it is usually subclassified on the basis of anatomic location.
angioblastic meningioma one containing many blood vessels of various sizes.
convexity meningiomas a diverse group of meningiomas located within the sulci of the brain, usually anterior to the rolandic fissure.
psammomatous meningioma one containing many psammoma bodies.
psam·mo·ma·tous meningioma (s -m  m-ts)n. A firm fibrous neoplasm of meninges of the brain and spinal cord characterized by psammona bodies. Also called sand tumor. |
psammomatous
pertaining to a psammoma.
psammomatous meningioma
a meningioma in which psammoma bodies occur.
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