Epidemiology

• Most common benign primary brain tumor in adults

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Etiology

• Multiple meningiomas may develop in patients with neurofibromatosis type II.

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Pathophysiology

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Clinical features

• Mostly asymptomatic
  • Meningiomas are slow-growing tumors and, as such, they are less invasive and the body has more time to adapt to the tumor.
• General symptoms of CNS tumors (e.g., seizures and focal neurologic signs)

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Diagnostics

Pathology

Microscopic findings

• Mesenchymal origin (arachnoid cap cells)
• Whorls of meningothelial cells (onion peel arrangement)
• Psammoma bodiesTwo of these whorls have a deeply basophilic acellular core, known as a psammoma body, which indicates dystrophic calcification.

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Treatment

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