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This tumor is developing from the meninges, this tumor is almost always of benign nature.

A meningioma is a meningeal tumor which forms from one of the three membranes constituting the meninges and which is called the arachnoid. It takes root in another meningeal membrane, the dura. It is benign in 9 out of 10 cases, atypical with tendency to recur in 9 % of cases (grade II) or malignant (cancerous) in less than 1 % of cases (grade III tumor).

What does meningioma look like?

Meningioma is mostly a unique tumor, a few millimeters when diagnosed early. Rich in blood vessels, the latter are powered by the meningeal arteries and those coming from the brain fabric.

brain hemispheres but the base of the skull or the cerebellum can host it. Depending on where it develops, symptoms vary very much and its evolution is slow.

Meningioma: What causes?

We know only one factor promoting its appearance, and it is an exposure to ionizing radiation. Other suspected factors?

Hereditary genetic arrangements, hormonal upheavals linked to pregnancy , or other hormonal factors linked to certain hormonal treatments by progestin.

Meningioma symptoms

The tumor may not cause signs and be discovered only during an examination (scanner or brain MRI) carried out for a completely different reason than its existence.

However, here is what can be manifested without anyone or the other of these signs allow them to be lio to meningioma:

• diffuse or local headaches, banal or recently appeared and worsening despite analgesics;
• Disorders of vision, sensitivity, speech, sight, behavior that has occurred recently or recent memory disorders;
• weakness in arms or legs;
• loss of balance and dizziness , loss of hearing or smell;
• epilepsy crisis.

As for the diagnosis, it will be made after an MRI or a scanner.

Treatment of meningioma

The fact that its evolution is slow can induce simple medical surveillance.

Surgery

However, surgery can also be essential when the symptoms are felt.

Depending on the size of the tumor, its location and the way it invades the bone, the surgical operation may not allow the total disappearance of the tumor.

Radiotherapy

Treatment by rays, whose mission is to destroy meningioma cells, can also be a solution. After the treatment of such a tumor, monitoring by control MRI is essential.