​Pathology - Meningioma

​Pathology - Meningioma 
Benign tumor originating from meningothelial cells of the arachnoid, located outside the brain.
Most prevalent among women over the age of 30.

Pathology: Typically a spherical encapsulated mass with a dural base, commonly found in the convexities of the cerebral hemispheres or the parasagittal area, and normally does not invade the brain.
Microscopic examination reveals a tightly packed whorled pattern of tumor cells together with psammoma masses with laminated calcifications.

Symptoms related to the compression of the underlying brain, such as seizures, headaches, nausea, vomiting, and other indications of elevated intracranial pressure.


Surgically remove the tumor if it causes symptoms.

The prognosis is favorable.
Meningiomas rank as the second most prevalent primary brain tumors.
Patients with neurofibromatosis type 2 may have several meningiomas.