Neurosurgery
Meningioma: monitoring, surgery or radiosurgery?
A meningioma is a tumour arising from the membranes surrounding the brain or spinal cord. Many grow slowly, but their behaviour and consequences vary according to their location and size.
Written by the Polycrabat Sevamed team · Published on · Updated on
In brief
- Many meningiomas grow slowly: some are discovered by chance on an MRI, others because of headaches, a seizure, weakness or a vision problem.
- MRI monitoring, surgery, stereotactic radiosurgery or fractionated radiotherapy: the choice depends on growth, symptoms, location and surgical risk, more than on size alone.
- A new seizure, recent weakness or neurological deterioration justifies prompt assessment.
Which factors weigh in the decision?
Growth on successive MRI scans, proximity to nerves and blood vessels, symptoms and general health count more than size alone. A team may propose monitoring even after a probable diagnosis.
Which options may be offered?
MRI monitoring may be appropriate for a small, stable lesion causing no symptoms. Surgery is discussed if the tumour grows, causes symptoms or compresses a sensitive area, taking into account the surgical risk. Stereotactic radiosurgery or fractionated radiotherapy may be considered depending on size, location, diagnosis and treatments already received. Each option has limits and none guarantees that there will be no recurrence.
Why long-term follow-up?
The frequency of MRI scans depends on the type of lesion and the treatment. A new seizure, recent weakness or neurological deterioration justifies prompt assessment.
What to expect after surgery or radiosurgery?
After surgery, the team monitors neurological symptoms and possible complications. After surgery or radiosurgery, follow-up imaging is still necessary; rehabilitation needs and the frequency of check-ups depend on neurological progress, the pathology result if available and the treatment received.
Useful questions to ask
- Is this meningioma stable, or is it growing on successive MRI scans?
- Which option (monitoring, surgery, radiosurgery or radiotherapy) suits its location, and with what limits?
- What schedule of MRI scans and what rehabilitation are planned after treatment?
Frequently asked questions
Is a meningioma always a cancer?
No. Many are low-grade, but their location can still make them problematic.
Does Gamma Knife remove the tumour immediately?
No. Its aim is gradual control, depending on the indication.
Can you obtain an opinion on a meningioma without travelling?
Yes. The images from successive MRI scans, not just their reports, allow the neurosurgeon to assess growth and propose a course of action, or to request a consultation on site.
This content provides general medical information. It does not replace a consultation or a personalised decision by your care team. In case of serious or sudden symptoms, contact the emergency services in your country or a doctor without delay.
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How is it discovered?
A meningioma may be found by chance on an MRI or looked for because of headaches, a seizure, weakness, a vision problem or other symptoms. The MRI describes its position, its relationship to neighbouring structures and any effects on the brain. The image suggests the diagnosis, but analysis of removed tissue may be necessary to determine its exact nature.