Meningioma Surgery

Introduction

If you or a family member has been diagnosed with a meningioma and surgery has been discussed as the next step, this guide is written for you. It explains what meningioma surgery involves, how doctors decide whether and when to operate, what the different surgical approaches look like, and what recovery typically feels like in the weeks and months afterwards.

A meningioma is a tumour that grows from the meninges — the thin layers of tissue that wrap around the brain and spinal cord. Most meningiomas are slow-growing and non-cancerous, which is reassuring news in an otherwise frightening diagnosis. However, because they grow in a closed space inside the skull, even a benign meningioma can press on the brain, on cranial nerves, or on blood vessels, and produce symptoms that need treatment.

Surgery is the main treatment for meningiomas that are causing symptoms or growing on follow-up scans. Modern neurosurgery uses high-resolution MRI, computer-guided navigation, the operating microscope, and intraoperative monitoring of nerves and brain function to remove tumours with much greater precision than was possible a generation ago. Outcomes for many patients are very good, particularly when the tumour is in a location that allows complete removal.

This article walks through what happens before, during, and after the operation, what risks to be aware of, and what life tends to look like in the longer term.

What Is Meningioma Surgery?

Meningioma surgery is a neurosurgical operation to remove a meningioma, either completely or as fully as can be done safely. The operation has several goals:

• Relieve pressure on the brain or on nearby structures such as cranial nerves
• Reduce symptoms such as headaches, seizures, weakness, or vision changes
• Prevent further growth of the tumour
• Obtain tissue for laboratory examination, which confirms the diagnosis and assigns a tumour grade

The standard surgical method is a craniotomy. In a craniotomy, the surgeon temporarily removes a small section of skull bone to reach the tumour, removes as much of the tumour as can be done safely, and then replaces the bone using small titanium plates and screws. For some meningiomas at the base of the skull, the tumour can be reached through the nose using an endoscope, avoiding a skin incision altogether.

Neurosurgeons use the phrase maximal safe resection to describe the goal of surgery. This means removing as much tumour as possible without injuring the brain tissue, blood vessels, or nerves that surround it. In some cases the tumour is wrapped around a critical structure — an artery, a cranial nerve, or the brainstem — and complete removal would cause unacceptable harm. In those situations the surgeon will deliberately leave a small remnant, which can then be watched on scans or treated later with focused radiation.

Meningioma Grades

The World Health Organization classifies meningiomas into three grades based on how the tumour cells look under the microscope and how they behave:

• Grade 1 (benign) — the most common form, slow-growing, with low risk of recurrence after complete removal. Around eight out of ten meningiomas are grade 1.
• Grade 2 (atypical) — faster-growing with a higher chance of recurrence; often treated with surgery followed by radiation in selected cases.
• Grade 3 (anaplastic or malignant) — rare, aggressive, behave more like cancer and almost always require both surgery and radiation.

The grade is only confirmed after surgery, when the pathologist examines the tumour tissue. The grade influences decisions about whether additional treatment is needed and how often follow-up scans are done.

Why Is Meningioma Surgery Performed?

Not every meningioma needs to be removed. Many are found by chance during a brain scan ordered for an unrelated reason, such as a headache evaluation or after a head injury. Small, symptom-free meningiomas in non-critical locations can often simply be watched with periodic MRI scans, particularly in older adults.

Surgery is generally considered when one or more of the following applies:

• The tumour is causing neurological symptoms such as headaches, seizures, weakness, numbness, vision or hearing changes, or personality changes
• Follow-up scans show the tumour is growing
• The tumour is pressing on critical brain structures, cranial nerves, or major blood vessels
• The tumour is large enough that growth is likely to cause symptoms soon
• The patient is younger and a long period of expected life makes a watch-and-wait approach less appropriate
• Tissue diagnosis is needed because imaging alone leaves the diagnosis uncertain

Common symptoms that lead to a meningioma being investigated and treated include persistent headaches, new-onset seizures, progressive weakness in an arm or a leg, gradual vision loss (particularly with meningiomas near the optic nerves), hearing changes, memory or concentration difficulties, balance problems, and changes in mood or behaviour. The specific symptoms depend almost entirely on where the tumour sits.

Who Is a Candidate?

Suitability for meningioma surgery depends on several factors. Your neurosurgeon will weigh:

• Tumour location — tumours over the surface of the brain (convexity meningiomas) are usually more straightforward to remove than those at the skull base or those wrapped around major arteries or the brainstem
• Tumour size and growth pattern — larger or rapidly growing tumours tend to be treated sooner
• Symptoms — the type and severity of neurological symptoms
• Your age and general health — the ability to safely undergo general anaesthesia and a brain operation
• Other medical conditions — heart disease, lung disease, diabetes, and bleeding disorders all influence planning

For some patients — particularly older adults with small, slow-growing, symptom-free tumours, or those with significant other illnesses — surgery may carry more risk than the tumour itself. In these situations, observation or stereotactic radiosurgery may be preferred. The decision is individual and is made jointly between the patient, the neurosurgeon, and often a multidisciplinary tumour team.

Alternatives to Surgery

Surgery is not the only option for every meningioma. Depending on the situation, the alternatives include:

Active Observation

For small meningiomas that are not causing symptoms, particularly in older adults, the standard approach is often to do nothing immediately and instead repeat MRI scans at intervals — commonly every six to twelve months at first, then less often if the tumour is stable. Many meningiomas grow very slowly or not at all over years. Observation avoids the risks of surgery in patients who may never need treatment.

Stereotactic Radiosurgery

• Small to moderate-sized meningiomas (typically under about 3 cm)
• Tumours in locations where surgery would carry high risk, such as the skull base or near critical nerves
• Residual or recurrent tumour after surgery
• Patients who are not fit for or who prefer to avoid open surgery

SRS does not remove the tumour but aims to stop it growing. Long-term control rates with SRS for benign meningiomas are good, though the tumour usually remains visible on scans.

Fractionated Radiotherapy

For larger tumours, or tumours close to sensitive structures like the optic nerves, radiation may be delivered in smaller daily doses over several weeks rather than a single session. This approach is also commonly used after surgery for atypical (grade 2) or malignant (grade 3) meningiomas, or when only a partial removal was possible.

Embolisation

Embolisation is not a stand-alone treatment but a preparatory procedure. A radiologist passes a thin catheter through a blood vessel and blocks the small arteries that feed a vascular meningioma, which reduces bleeding during the surgery that follows.

Medical Therapy

There are no drug therapies that reliably shrink meningiomas. Medication is used to manage symptoms — for example, corticosteroids to reduce brain swelling, and anti-seizure medications when seizures have occurred. Clinical trials of targeted therapies for difficult or recurrent meningiomas are ongoing.

Surgical Approaches

Open Craniotomy

This is the most common and most versatile approach. The surgeon makes a skin incision on the scalp, temporarily removes a section of skull bone over the tumour, opens the dura (the outer covering of the brain), and removes the tumour under the operating microscope. The dura and the bone are then repaired and the scalp is closed. Open craniotomy gives the surgeon a wide view and direct access, which is particularly important for larger tumours or tumours over the convexity (surface) of the brain. The incision is usually behind the hairline so the scar is hidden once the hair regrows.

Skull Base Surgery

Meningiomas that grow at the base of the skull — near the eyes, the inner ear, or the spaces where cranial nerves and major arteries exit the brain — require specialised approaches. These operations are often longer and more complex because the surgeon must work around critical structures. Skull base craniotomies may go through the bone behind or beside the ear, behind the eye socket, or through other carefully chosen routes. They are typically performed by neurosurgeons with subspecialty training in skull base surgery, often working alongside head-and-neck or ENT surgeons.

Endoscopic Endonasal Surgery

For some meningiomas at the front of the skull base — for example tuberculum sellae or planum sphenoidale meningiomas — the tumour can be reached through the nose using an endoscope (a thin camera with surgical instruments). This avoids any skin incision and any removal of skull bone over the brain. It is not suitable for every skull base tumour and requires a surgical team experienced in endoscopic skull base techniques.

Minimally Invasive (Keyhole) Craniotomy

Some meningiomas can be removed through a smaller craniotomy than the traditional approach — sometimes called a keyhole craniotomy. The incision is shorter, the bone opening is smaller, and recovery from the wound itself can be quicker. Whether a keyhole approach is appropriate depends on the tumour location and size. The aim of the surgery — safe removal of as much tumour as possible — is the same regardless of incision size.

Spinal Meningioma Surgery

Meningiomas can also grow in the spinal canal, most often in the thoracic spine. These are removed through a laminectomy — an operation on the back of the spine that opens the bony canal around the spinal cord. Spinal meningiomas are usually benign and outcomes after surgery are generally good.

Preparing for Meningioma Surgery

Careful preparation is critical because brain surgery requires precise planning. In the weeks before the operation, you will usually undergo several assessments.

Imaging

• MRI with contrast — the main imaging test for meningiomas; shows the tumour, its borders, and its relationship to brain tissue
• CT scan — helpful to see how the tumour affects nearby bone
• MR angiography or CT angiography — if the tumour sits near or involves major blood vessels
• Functional MRI and tractography — used when the tumour is near brain regions controlling movement, speech, or vision, to map these regions before surgery
• Catheter angiography and possible embolisation — for highly vascular tumours

Medical Assessment

• Blood tests including a full blood count, clotting tests, kidney and liver function, and blood typing
• ECG and, depending on your age and health, an echocardiogram or other cardiac tests
• Anaesthetic review to confirm fitness for general anaesthesia
• Review of all current medications

Medication Adjustments

You will usually be asked to stop blood-thinning medications such as aspirin, clopidogrel, warfarin, or direct oral anticoagulants several days before surgery, under the guidance of the prescribing doctor. If you are taking corticosteroids to reduce brain swelling, or anti-seizure medications, these are usually continued and may be adjusted. Diabetes medications and other regular drugs are managed individually.

Practical Preparation

• You will be asked not to eat for several hours before surgery
• A small area of hair may be shaved at the incision site — many surgeons now shave only a narrow strip or no hair at all
• Arrange help at home for the first few weeks of recovery
• Bring loose, comfortable clothing for the hospital stay
• Plan for someone to be available to drive you home and stay with you for the first days after discharge

This is also the right time to ask the neurosurgeon any remaining questions: what is the expected extent of removal, what are the specific risks for your tumour location, what does the recovery look like, and what is the plan if pathology shows a higher grade than expected.

What Happens During Meningioma Surgery

On the day of surgery, you will be admitted to hospital and prepared for the operation. The general sequence is:

1. Anaesthesia. A general anaesthetic is given so you are fully asleep throughout the procedure. A breathing tube is placed, and intravenous lines and a urinary catheter are inserted.
2. Positioning. Your head is positioned and gently held still using a head clamp. The position depends on where the tumour is.
3. Navigation setup. Computer-guided navigation, similar in concept to GPS, is registered to your MRI scan so the surgeon can track instruments inside the skull in real time.
4. Incision and craniotomy. The surgeon makes the planned skin incision, separates the scalp, and removes a section of skull bone using specialised drills. The bone is preserved to be replaced at the end.
5. Opening the dura. The dura is opened carefully to expose the tumour.
6. Microsurgical removal. Using the operating microscope, the surgeon separates the tumour from surrounding brain tissue and blood vessels and removes it piece by piece. Intraoperative monitoring of nerves and brain function may be used to protect critical pathways.
7. Haemostasis. Bleeding is carefully controlled.
8. Closure. The dura is repaired, sometimes with a graft. The bone is fixed back into place with small titanium plates. The scalp is closed in layers with sutures or staples.

The operation typically takes between three and eight hours, sometimes longer for complex skull base tumours. Family members will usually be updated by the surgical team during and after the procedure.

Recovery and Healing

Immediately After Surgery

You will wake up in a recovery area and then usually be transferred to a neurosurgical intensive care unit or a high-dependency unit for close monitoring. Nurses will check your neurological status frequently — pupil size, limb strength, speech, and level of consciousness — to detect any early problems. You can expect:

• A headache, often relieved by medication
• Some nausea, which is usually short-lived
• Swelling around the incision and sometimes around one eye
• A drain near the incision in some cases, removed within a day or two
• Continued intravenous fluids and gradual return to oral intake

An early CT or MRI scan is often done within the first 24 to 72 hours to confirm the extent of tumour removal and check for any post-operative bleeding or swelling.

Hospital Stay

Most patients move from intensive care to a regular ward after 24 to 48 hours and stay in hospital for a total of four to seven days. Physiotherapists may begin gentle mobilisation early. Stitches or staples are usually removed about seven to ten days after surgery, sometimes at the first outpatient visit.

First Few Weeks at Home

• Fatigue is very common and is often the most prominent symptom in the early weeks
• Headaches usually settle over two to four weeks
• The incision should be kept clean and dry as advised; signs of redness, swelling, discharge, or fever should be reported promptly
• Anti-seizure medications, if started, are usually continued for a defined period
• Driving is restricted, especially if you have had a seizure; local rules vary and your surgeon will advise
• Heavy lifting, contact sports, and strenuous exercise are avoided

Six Weeks to Three Months

Most patients gradually return to light activity over the first six weeks, and to many normal routines including office-type work within two to three months. Energy levels improve steadily. Some patients return to full activity sooner, others take longer — the trajectory depends heavily on what was happening before surgery and on the tumour itself.

Longer Recovery

If neurological symptoms such as weakness, speech difficulty, or vision changes were present before surgery, recovery of these functions can continue for many months and is supported by rehabilitation therapy. Physiotherapy, occupational therapy, and speech therapy are arranged when needed. The first major follow-up MRI is usually scheduled around three months after surgery.

Risks and Complications

All brain surgery carries some risk, although serious complications are uncommon in experienced hands. The specific risks depend strongly on the tumour location. Your neurosurgeon will discuss the risks that apply to your particular situation in detail before surgery. Possible complications include:

• Bleeding. Bleeding can occur during surgery or in the hours afterwards and may rarely require a second operation.
• Brain swelling. Some swelling is normal; significant swelling is treated with steroids and close monitoring.
• Infection. Wound infection or, less commonly, meningitis can occur. Antibiotics are given to reduce this risk.
• Seizures. Seizures can occur as a result of brain irritation; anti-seizure medications are often given preventively.
• Neurological deficits. Weakness, numbness, speech difficulty, vision changes, or balance problems can occur if brain or cranial nerve function is affected. Deficits may be temporary or, less commonly, permanent.
• Cerebrospinal fluid (CSF) leak. Leakage of the fluid that surrounds the brain, more common with skull base and endoscopic approaches. May require additional treatment.
• Blood clots. Clots in the legs (DVT) or lungs (PE) can occur after major surgery; compression stockings, calf pumps, and early mobilisation reduce this risk.
• Anaesthetic complications. Rare but possible, as with any major surgery.
• Stroke. Uncommon but possible, particularly with tumours near major arteries.
• Hormone changes. Specific to tumours near the pituitary gland.
• Hydrocephalus. A build-up of fluid in the brain that may require a shunt in rare cases.

Risk is reduced by careful surgical planning, intraoperative navigation and monitoring, experienced surgical teams, and good post-operative care.

Outcomes and Long-Term Follow-up

Outcomes after meningioma surgery are often very good, particularly for grade 1 tumours that are completely removed. Long-term tumour control after complete removal of a benign meningioma is generally high, although follow-up is needed for many years because slow regrowth can occur even after seemingly complete removal.

The likelihood of complete removal and the risk of recurrence depend largely on:

• Tumour location. Convexity meningiomas are most often completely removed; some skull base meningiomas cannot be fully removed without unacceptable risk.
• Extent of resection. The Simpson grade is a surgical scale that describes how completely the tumour and its attachments were removed. Higher completeness is associated with lower recurrence.
• Tumour grade. Grade 1 tumours have lower recurrence rates than grade 2 or 3.
• Other features. Certain molecular and biological features can influence the chance of regrowth.

If complete removal was not possible, or if the pathology shows a grade 2 or grade 3 tumour, additional treatment with radiation may be recommended. The plan is usually discussed at a multidisciplinary tumour board meeting that includes neurosurgeons, radiation oncologists, neuro-oncologists, and radiologists.

Follow-up Scans

Long-term follow-up with MRI scans is the standard practice. A common pattern is a scan at around three months after surgery, then at six and twelve months, then annually for several years, then less often if the scans remain stable. Patients with higher-grade tumours or residual tumour are scanned more frequently. The exact schedule depends on the individual case.

Life After Meningioma Surgery

Most patients are able to return to work, family life, and many of their normal activities after recovery. Some adjustments may be needed, depending on tumour location and any residual symptoms.

Returning to Work and Driving

Office-based work is often resumed within two to three months. Physically demanding work may take longer. Driving rules depend on local regulations and on whether seizures have occurred; in many places there is a mandatory period off driving after brain surgery, and a longer period if a seizure has happened. Your surgeon will give you clear guidance.

Seizure Management

If anti-seizure medications were started, your neurologist or neurosurgeon will guide when and whether they can be stopped. Some patients can come off these medications after a period without seizures; others continue them long term.

Hormonal and Other Specialist Follow-up

If the tumour was near the pituitary gland, hormone levels may be checked regularly by an endocrinologist. If vision was affected, an ophthalmologist or neuro-ophthalmologist will be involved. Each patient’s follow-up team is shaped by what the tumour affected.

Emotional Recovery

It is normal to feel anxious, low, or emotionally drained in the weeks and months after brain surgery. Fatigue, changes in concentration, and the shock of having been through a serious operation can all contribute. Support from family, peer groups, and, where needed, a counsellor or psychologist can help. If mood symptoms are persistent or severe, mention them at follow-up — they are common and treatable.

Lifestyle

General brain health measures — good sleep, regular gentle exercise once cleared, a balanced diet, managing blood pressure and diabetes, avoiding excessive alcohol, and not smoking — support recovery and long-term well-being. There is no specific diet that prevents meningiomas, and there is no clear link between common lifestyle factors and meningioma development.

Meningioma Surgery in Children

Meningiomas are uncommon in children, making up only a small percentage of paediatric brain tumours. When they do occur, they sometimes behave differently from adult meningiomas — they can be larger at diagnosis, more often atypical (grade 2), and are sometimes associated with genetic conditions such as neurofibromatosis type 2 or with a history of previous radiation to the head.

The general principles of surgical treatment are the same as in adults: maximal safe removal under the operating microscope, with the help of intraoperative navigation and monitoring. Care is delivered by a paediatric neurosurgical team and includes specialised anaesthesia, paediatric intensive care, and rehabilitation suited to a child’s developmental stage. Long-term follow-up is particularly important because of the longer life expectancy and the potential for late effects of any radiation therapy used after surgery.

For families of children with meningiomas, decisions about surgery, radiation, and surveillance are made by a multidisciplinary paediatric neuro-oncology team and are highly individual to the child.

Frequently Asked Questions

Is a meningioma a brain tumour?

Meningiomas arise from the meninges, which are the protective membranes around the brain and spinal cord, rather than from the brain tissue itself. They are usually classified as brain tumours because of where they grow and because they can press on the brain. Most are benign.

Is meningioma surgery dangerous?

All brain surgery carries risk, but modern neurosurgical techniques, microscopic and endoscopic tools, computer-guided navigation, and intraoperative monitoring have made meningioma surgery much safer than in the past. The level of risk depends on tumour location and your overall health. Your surgeon will discuss the specific risks for your case.

How long does meningioma surgery take?

Most operations take between three and eight hours. Complex skull base surgeries can take longer. Total time in the operating theatre is longer than the surgical time itself because of anaesthesia setup, positioning, and recovery.

Will my hair be shaved for surgery?

Many surgeons today shave only a narrow strip of hair along the incision line, or no hair at all. The remaining hair usually covers the scar once it has healed.

Will I have a visible scar?

The incision is usually placed behind the hairline so that the scar is hidden once the hair regrows. Endoscopic approaches through the nose leave no visible scar.

How soon can I return to work?

Most patients return to office-type work within two to three months. Physically demanding work or driving for a living may require longer and may be subject to specific medical clearance.

Can a meningioma come back after surgery?

Yes, recurrence is possible, particularly if the tumour could not be completely removed or if the pathology shows a higher grade. This is why long-term MRI follow-up is important. Many patients have no recurrence over many years.

Will I need radiation after surgery?

Many patients with completely removed grade 1 meningiomas do not need radiation. Radiation is more commonly recommended for grade 2 or 3 tumours, for incompletely removed tumours, and for recurrences. The decision is usually made at a multidisciplinary meeting.

Will surgery cure my symptoms?

Some symptoms, particularly headaches and seizures caused by pressure from the tumour, often improve after surgery. Other symptoms, such as long-standing weakness or vision loss, may improve partially or may persist. Recovery of neurological function can continue for many months and is often supported by rehabilitation therapy.

Can a meningioma be treated without surgery?

Yes, in selected cases. Small, symptom-free meningiomas can often be watched with regular scans. Stereotactic radiosurgery or fractionated radiotherapy can be used in place of surgery for some tumours, particularly small ones in difficult locations. Whether these alternatives are appropriate depends on tumour size, location, and patient factors.

Conclusion

A meningioma diagnosis is unsettling, but it usually comes with reassuring features — most are benign, most grow slowly, and many are highly treatable. Surgery, when needed, aims to remove as much tumour as can be safely taken out, relieve pressure on the brain, and confirm the diagnosis through pathology. Modern techniques, careful planning, and multidisciplinary follow-up have made outcomes for many patients very good.

The specific path through diagnosis, treatment, and recovery is individual to each person and each tumour. Detailed decisions — whether to operate, which surgical approach to use, whether to combine surgery with radiation, and how often to follow up — are made together with a neurosurgical team that knows the full picture of your case. The information in this guide is intended to help you understand what is being discussed, ask informed questions, and feel prepared for what lies ahead.