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Types of Meningiomas

Common Locations (Types) of Meningiomas

Meningiomas are often described by their location within the brain. The most common are:

 

 

convexity meningioma

Convexity Meningioma

Convexity meningioma grow on the surface of the brain directly under the skull. Accounting for approximately 20% of meningiomas, convexity meningiomas may not present symptoms until the tumor has become quite large. If large enough, however, convexity meningiomas will present symptoms based on its location and where it is pushing on the brain.

falcine and parasagittal meningioma

Falcine and Parasagittal Meningioma

Falcine and parasagittal meningioma, which forms in the falx – a very thin layer of tissue between the two sides of the brain (falcine meningioma), or near the falx (parasagittal meningioma)

intraventricular meningioma

Intraventricular Meningioma

Intraventricular meningioma, which forms within the ventricular system in the brain, which is where cerebrospinal fluid (CSF) is made and distributed. An intraventricular meningioma may cause an obstruction of CSF, leading to hydrocephalus.

 

Skull Base Meningiomas

Some meningiomas form in the bones that form the bottom of the skull and the bony ridge in the back of the eyes. Skull base meningiomas are more difficult to remove surgically than convexity meningiomas.

 

 

Skull base meningiomas also include:

sphenoid wing meningioma

Sphenoid Wing Meningioma

Sphenoid wing meningioma, which forms on the skull base behind the eyes. Approximately 20% of meningiomas are sphenoid wing.

olfactory groove meningioma

Olfactory Groove Meningioma

Olfactory groove meningioma, which forms along the nerves connecting the brain to the nose. Olfactory groove meningiomas account for around 10% of meningiomas. This type of tumor can cause a loss of smell, and if overgrown, can cause problems with vision.

posterior fossa / petrous meningioma

Posterior Fossa / Petrous Meningioma

Posterior fossa / petrous meningioma, which forms on the underside of the brain. Accounting for approximately 10% of meningiomas, posterior fossa meningiomas can press on the cranial nerves, causing facial and hearing problems. Petrous meningiomas often press on the trigeminal nerve, causing a condition called trigeminal neuralgia.

suprasellar meningioma

Suprasellar Meningioma

Suprasellar meningioma, which forms in the center of the base of the skull. Tumors in this area can cause visual problems and dysfunction of the pituitary gland.

Recurrent meningioma

Any meningioma may come back. When a meningioma does recur, it may be the same grade as the previous tumor or it may progress to a more aggressive or malignant form.

To make an appointment or request a consultation, contact the Johns Hopkins Meningioma Center at 410-955-6406.

 

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