Pediatric Brain Tumor Surgery

Introduction

If your child has been diagnosed with a brain tumour and surgery has been advised, you are facing one of the hardest moments a parent can go through. The information arrives quickly, the language is unfamiliar, and the decisions feel enormous. This article is written for you — the parent of a child who is being prepared for, or is recovering from, brain tumour surgery.

Pediatric brain tumour surgery is different from adult brain surgery. A child’s brain is still developing, which brings both special concerns and a remarkable capacity to adapt and heal. Over the past two decades, advances in imaging, surgical microscopes, neuronavigation (computer guidance during surgery), intraoperative monitoring of brain function, and dedicated pediatric anaesthesia have changed what is possible. Many pediatric brain tumours that were once considered untreatable are now treatable, and a meaningful number are curable.

Surgery is often the first and most important step in treatment. Depending on the tumour, surgery alone may be enough. In other cases it is followed by chemotherapy, radiation therapy, or targeted medical therapy. The pages that follow walk through what pediatric brain tumour surgery involves, the different approaches surgeons use, what recovery typically looks like in the hospital and afterwards, what risks to be aware of, and what life looks like in the months and years that follow.

What Is Pediatric Brain Tumor Surgery?

• The cerebrum — the large upper part of the brain that controls thinking, movement, speech, and the senses
• The cerebellum — at the back of the brain, responsible for balance and coordination; a very common site for pediatric tumours
• The brainstem — the deep central structure that controls breathing, heart rate, swallowing, and eye movement
• The ventricles — the fluid-filled spaces inside the brain
• The pituitary gland and surrounding skull base — deep central structures involved in hormone regulation and vision
• The spinal cord — sometimes affected by tumours that extend from the brain or arise in the cord itself

The most common technique used for tumours inside the skull is a craniotomy. In a craniotomy, the surgeon temporarily removes a small piece of skull bone (called a bone flap) to safely reach the brain. After the tumour is removed, the bone flap is put back in place and secured. For some tumours in or near the ventricles or pituitary, surgeons may use an endoscopic approach, working through a small natural opening or a small skull opening with a camera and fine instruments.

The goals of pediatric brain tumour surgery are usually one or more of the following:

• Maximal safe resection — removing as much tumour as possible without harming critical brain function. “Safe” is as important as “maximal.”
• Relieving pressure inside the skull, which can build up when a tumour grows or blocks the flow of cerebrospinal fluid (the clear fluid that cushions the brain)
• Obtaining tissue for diagnosis under the microscope and for molecular testing, which now guides treatment decisions for many pediatric tumours
• Improving symptoms such as headaches, vomiting, weakness, or vision problems

It is important to know that complete removal is not always the goal. For tumours close to vital structures, surgeons may deliberately leave a small amount of tumour behind to protect speech, movement, vision, or hormone function, with the understanding that chemotherapy, radiation, or close monitoring will follow.

Why Surgery Is Performed

Neurosurgical teams consider surgery when one or more of the following is true:

• The tumour is causing significant symptoms
• The tumour is growing on follow-up scans
• Pressure inside the skull is rising, or imaging shows risk of hydrocephalus (a buildup of fluid in the ventricles)
• The tumour is blocking the normal flow of cerebrospinal fluid
• A tissue diagnosis is needed to plan the rest of treatment
• The tumour is in a location where surgery offers a real chance of cure or long-term control

The most common symptoms that bring a child to medical attention — and that surgery may help to relieve — include:

• Persistent or worsening headaches, often worse in the morning
• Morning vomiting, sometimes without nausea
• Problems with balance, walking, or coordination
• New seizures
• Vision problems, double vision, or unusual eye movements
• Weakness or numbness on one side of the body
• Changes in behaviour, mood, school performance, or personality
• In infants, an unusually enlarging head, irritability, or developmental regression

If your child is being evaluated for surgery, the decision is made by a multidisciplinary team that typically includes a pediatric neurosurgeon, pediatric neuro-oncologist, neuroradiologist, neuropathologist, pediatric anaesthesiologist, and often a radiation oncologist. This team weighs tumour type, location, size, the child’s age and overall health, and the likely benefit of surgery against its risks.

Who Is a Candidate?

Most children with a brain tumour are candidates for some form of surgery, but not all. Decisions depend on several factors:

• Tumour location. Tumours in the cerebellum or accessible parts of the cerebrum are often more straightforward to operate on than tumours deep in the brainstem or threaded through critical pathways.
• Tumour type, as suspected from imaging. Some tumours look characteristic on MRI; others require tissue to confirm.
• The child’s age and overall condition. Very young infants have specific anaesthetic considerations. A child who is acutely unwell from raised pressure may need urgent surgery to relieve fluid buildup before definitive tumour surgery.
• The likely benefit of resection versus biopsy. For some tumour types in delicate locations, a biopsy (taking a small sample) followed by chemotherapy or radiation may be safer than attempting full removal.

In some children, the first surgical step is not tumour removal at all but placement of a device to manage fluid pressure — either an external ventricular drain (a temporary tube) or an endoscopic third ventriculostomy (a small internal opening created to bypass a blockage). A ventriculoperitoneal (VP) shunt, which drains fluid from the brain to the abdomen through a thin tube under the skin, may be placed before, during, or after tumour surgery if hydrocephalus is expected to persist.

Surgical Approaches

Open Craniotomy

This is the most common approach. The surgeon makes an incision in the scalp, lifts the skin and muscle aside, and removes a piece of skull bone to expose the brain. The dura (the tough membrane covering the brain) is opened, the tumour is removed using a surgical microscope and fine instruments, and then everything is closed back in layers. The bone flap is fixed in place with tiny plates or sutures. Modern pediatric craniotomies use neuronavigation, which works like a GPS system to guide the surgeon to the exact location of the tumour, and often intraoperative monitoring of nerves and brain function.

Keyhole or Minimally Invasive Craniotomy

For carefully selected tumours, surgeons can work through a smaller bone opening, sometimes only a few centimetres across. This may reduce the size of the scar and the time to recover the skin and muscle, though the brain work inside is just as careful as in any craniotomy. Not every tumour is suitable for a keyhole approach; the decision depends on size, depth, and the angle of access required.

Endoscopic Surgery

An endoscope is a thin tube with a camera and light at its tip. For tumours inside the ventricles, or for some pituitary and skull-base tumours, surgeons can pass an endoscope through a small skull opening or through the nose, removing the tumour using miniature instruments while watching on a screen. Endoscopic approaches can mean shorter recovery for the right tumour but are not appropriate for every case.

Awake Surgery with Brain Mapping

For older children with tumours near speech or movement areas, surgeons occasionally use awake surgery, where the child is asleep for the opening and closing but awake during the tumour removal. During the awake portion, the child is asked to speak, move, or perform simple tasks while the surgeon maps which parts of the brain are essential to protect. Awake surgery is uncommon in young children but is sometimes offered to adolescents able to cooperate.

Stereotactic or Image-Guided Biopsy

If tissue is needed but full removal is not safe — for example, for some brainstem tumours — a stereotactic biopsy may be performed. A small probe is guided to the tumour through a tiny hole in the skull, and a small sample is taken for the pathology team. Biopsy may be the only surgery, or it may guide further treatment with chemotherapy or radiation.

Shunt or CSF Diversion Procedures

Procedures to drain cerebrospinal fluid — either temporarily (external drain) or longer term (VP shunt, endoscopic third ventriculostomy) — are sometimes done alongside or before tumour surgery to relieve dangerous pressure.

The choice of approach is made by the neurosurgical team after careful review of imaging and discussion with you. In many children, more than one approach could work; the team will explain why a particular approach is preferred for your child.

Preparing for Surgery

Preparation begins well before the day of surgery. The team uses this time to gather detailed information and to prepare both your child and your family.

Imaging

• MRI with contrast is the main imaging test. It shows the tumour’s exact size, shape, and relationship to surrounding structures.
• CT scan may be added if the surgeon needs detailed views of bone or to check for bleeding.
• MR angiography or venography may be done when the tumour sits close to major blood vessels.
• Functional MRI and diffusion tensor imaging (DTI) can map speech, motor, and visual pathways relative to the tumour, helping the surgeon plan the safest route.

Medical Assessment

• Blood tests, including clotting tests and a blood type and crossmatch in case a transfusion is needed
• A pediatric anaesthesia review, which is especially important in young children and in any child with other medical conditions
• Hormone tests if the tumour is near the pituitary
• Vision and hearing baseline tests when relevant
• Seizure medications, if your child has had a seizure, are usually started or optimised before surgery
• Steroids (such as dexamethasone) are commonly given before and around surgery to reduce swelling around the tumour

Preparing Your Child

How you talk about surgery with your child depends on their age and what they can understand. Child life specialists, where available, can help explain the hospital, the operating theatre, masks, and tubes in age-appropriate ways. Honest, simple language — that doctors will help them while they sleep, that they will be cared for — usually serves children better than vague reassurance. For older children and teenagers, knowing what to expect tends to reduce anxiety rather than increase it.

Preparing Yourself

Ask the team to walk you through the plan more than once if you need to. Many parents find it helpful to bring a second adult to consent conversations, to take notes, and to write down questions between appointments. You will be asked to sign a consent form that lists the procedure, its main benefits, and its main risks. It is reasonable, and welcomed, to ask the surgeon to explain anything that is unclear.

What Happens During Surgery

On the day of surgery, your child will not be allowed to eat or drink for a set number of hours beforehand. The anaesthesia team will meet you in the pre-operative area. In most pediatric hospitals, one parent can stay with the child until they are asleep.

A typical pediatric craniotomy involves these stages:

1. General anaesthesia. Your child is given medicine that puts them fully asleep. A breathing tube is placed, and lines are placed for fluids, medications, and monitoring.
2. Positioning. The child is positioned for the best access to the tumour — on their back, side, or front, with the head held very still in a padded frame.
3. Registration and planning. The neuronavigation system is matched to the MRI scans so the surgeon can track the location of the tumour during the operation.
4. Opening. The scalp is cleaned, draped, and incised. The bone flap is removed and set aside.
5. Tumour removal. Using the operating microscope, the surgeon carefully separates the tumour from the surrounding brain. Specialised instruments — small suction devices, ultrasonic tumour aspirators, fine bipolar coagulators — allow precise work.
6. Intraoperative monitoring. Throughout the operation, the team monitors brain function. This can include electrical recordings from nerves and muscles to confirm that motor, sensory, hearing, or facial nerves are working as expected.
7. Closure. The dura is closed, the bone flap is replaced and secured, and the scalp is sutured. A drain may be left in place for a day or two.

The total operation can last anywhere from three to ten hours or more, depending on the tumour’s size, location, and complexity. The team will usually update you periodically while your child is in surgery.

Hospital Recovery

Immediately After Surgery

• Frequent neurological checks — pupil size, level of alertness, movement of arms and legs, speech where age-appropriate
• Monitoring of heart rate, blood pressure, oxygen, and temperature
• Pain management with appropriate pediatric medicines
• Anti-seizure medication, often continued for a period after surgery
• Steroids, usually tapered down over days as swelling settles
• An early post-operative MRI scan, often within 24 to 72 hours, to document how much tumour has been removed

On the Ward

Once your child is stable, they move to a regular pediatric ward or pediatric neurosurgery ward. The typical hospital stay after a pediatric craniotomy is around five to ten days, though it can be shorter or considerably longer depending on the tumour and how recovery unfolds. During the ward stay:

• Activity is increased gradually — sitting up, standing, walking with help
• Eating and drinking resume as tolerated
• Swallowing and speech are assessed if the tumour involved areas affecting these functions
• Physical and occupational therapy may start early, especially for tumours of the cerebellum or motor areas
• The wound is checked daily; sutures or staples are usually removed at around 7 to 10 days

You will be taught how to care for the incision, what symptoms to watch for at home, when to give medications, and how to plan follow-up.

Recovery at Home and Over Time

The First Two Weeks

• Tiredness is the most common feature. Children sleep more and tire quickly.
• Mild headaches and some swelling or bruising around the incision are common
• Appetite may be reduced initially
• Mood swings, irritability, or short-term changes in behaviour can occur and usually settle
• Some children show temporary worsening of symptoms (weakness, balance, speech) due to swelling, before improvement begins

Two to Six Weeks

• Energy gradually returns. Short outings become easier.
• The incision continues to heal; the team will advise when hair washing, swimming, and other activities are safe
• Physical, occupational, or speech therapy may be in progress
• Follow-up MRI scans are reviewed
• If chemotherapy or radiation is planned, treatment usually begins in this window, once the surgical wound has healed sufficiently

Two to Six Months

• Many children return to school, sometimes part-time at first
• Therapy continues for children who need rehabilitation
• Neurocognitive assessment (testing memory, attention, processing) may be arranged, particularly if radiation has been part of treatment
• Routines — play, friendships, family rhythm — begin to feel more familiar

Beyond Six Months

• Long-term follow-up is the norm. Regular MRI scans monitor for recurrence and for late changes.
• Endocrine (hormone) follow-up is essential after tumours of the pituitary or hypothalamus, and after radiation
• Many children regain normal childhood activities; some live with lasting changes that the family and care team learn to support

Children’s brains have a real capacity to adapt — neurologists sometimes call this neuroplasticity. Skills that seem slow to return in the first weeks often improve substantially over months. Rehabilitation in this window matters.

Adjuvant Treatment After Surgery

For some pediatric brain tumours, surgery is the entire treatment. For others, surgery is followed by additional therapy guided by the pathology and molecular testing of the removed tissue.

• Chemotherapy is commonly used for medulloblastoma, certain ependymomas, atypical teratoid/rhabdoid tumour (AT/RT), some gliomas, and others. Modern protocols are designed specifically for children, with attention to long-term effects.
• Radiation therapy may be recommended for older children with certain tumours. In very young children, teams usually try to delay or avoid radiation to protect the developing brain, often using chemotherapy as a bridge.
• Targeted therapies — medicines that act on specific molecular changes within the tumour — are an increasingly important part of pediatric neuro-oncology, especially for low-grade gliomas with BRAF mutations and certain other tumour types.
• Proton beam therapy, where available, can reduce the dose of radiation to surrounding healthy brain in selected children.

Every brain operation carries risks. The surgical team will discuss the specific risks for your child’s tumour during the consent conversation. In general, the possible complications of pediatric brain tumour surgery include:

• Infection of the wound, bone flap, or, less commonly, the lining of the brain (meningitis)
• Bleeding at the surgical site, sometimes requiring a return to theatre
• Brain swelling after surgery, usually managed with steroids and supportive care
• Seizures, which can occur after any brain surgery; anti-seizure medication is often given around the time of surgery to reduce this risk
• Neurological deficits — weakness, speech problems, balance problems, vision changes — depending on which part of the brain was involved. Some are temporary; some may be longer lasting.
• Cerebrospinal fluid (CSF) leak, where fluid leaks from the wound or, after some skull-base operations, from the nose
• Hydrocephalus, requiring drainage or a shunt
• Posterior fossa syndrome (cerebellar mutism syndrome), which can follow surgery on tumours of the cerebellum. Children may temporarily lose the ability to speak, become emotionally labile, and have difficulty with balance. Most improve over weeks to months, though some symptoms can persist.
• Hormonal changes after operations near the pituitary or hypothalamus, sometimes requiring lifelong hormone replacement
• Anaesthesia-related risks, which are uncommon in experienced pediatric units but never zero

The risk profile for any individual child depends heavily on the tumour’s location, its relationship to critical structures, and the child’s overall condition. A small, accessible tumour in the cerebellum carries a very different risk picture from a tumour wrapped around the brainstem.

Life After Surgery

Life after pediatric brain tumour surgery is not just a medical follow-up plan. It is a family journey, sometimes over years. The major elements include:

Medical Follow-Up

• Regular MRI scans on a schedule set by your neuro-oncology team. Scans are more frequent in the first one to two years and gradually space out if everything is stable.
• Neurological assessments at clinic visits
• Endocrine follow-up for tumours and treatments that affect hormones, including growth, thyroid, cortisol, and puberty hormones
• Hearing and vision checks, particularly after platinum-based chemotherapy or after surgery near the visual pathways
• Neurocognitive testing at intervals to identify learning needs and guide school support

School and Learning

Returning to school is an important milestone. Many schools are willing to put adaptations in place — a phased return, shorter days at first, rest breaks, extra time for tasks, classroom seating adjustments, support for handwriting or note-taking, and individual education plans where needed. A meeting between the medical team, you, and the school is often valuable. Some children show learning differences that emerge gradually, particularly after radiation; neuropsychological assessment can identify needs early.

Emotional and Family Well-being

The emotional impact of a brain tumour diagnosis and surgery is real, both for the child and for parents and siblings. Children may show anxiety about returning for scans (sometimes called “scanxiety”), changes in self-image after surgery, or worry about the future. Parents often describe a delayed wave of difficult feelings after the immediate crisis passes. Counselling, peer support groups, and child psychology input can help. Siblings, too, benefit from age-appropriate explanations and from feeling included.

Rehabilitation

Where surgery or the tumour has affected movement, balance, speech, swallowing, vision, or learning, rehabilitation continues for as long as it is useful. Physical therapy, occupational therapy, speech and language therapy, and educational support are tailored to your child’s needs and reviewed regularly.

Physical Activity

Most children eventually return to normal play and physical activity. Contact sports and activities with a risk of head impact are usually restricted for a period after surgery, especially before the bone flap has fully healed. The neurosurgical team will give specific guidance based on your child’s case.

Outlook

The outlook after pediatric brain tumour surgery depends overwhelmingly on the tumour type, the extent of removal, and the response to any additional treatment. Broad clinical patterns include:

• Low-grade gliomas, the most common pediatric brain tumour group, are often slow-growing. When surgery removes the whole tumour, many children are cured. When residual tumour remains, observation or chemotherapy may be used, and long-term outcomes are generally favourable.
• Medulloblastoma, a common cerebellar tumour, is treated with surgery followed by chemotherapy and (in older children) radiation. Outcomes have improved substantially over recent decades, and a meaningful proportion of children achieve long-term survival, with the best outcomes in the more favourable molecular subgroups.
• Ependymomas respond best when fully removed; the extent of surgical removal is one of the strongest predictors of outcome.
• Craniopharyngiomas, near the pituitary, are typically not cancerous but can be challenging because of their location; children often need long-term hormone replacement and visual follow-up.
• Diffuse intrinsic pontine glioma (DIPG) and some high-grade brainstem tumours remain among the most difficult pediatric brain tumours, with research actively underway to improve treatment.

Specific survival numbers vary by tumour type, molecular features, age, and other factors, and have changed as treatment has evolved. Your child’s neuro-oncology team can give you the most accurate picture for your child’s specific diagnosis. It is reasonable to ask them what the realistic expectations are, what the goals of treatment are, and what the plan is if the response is not what is hoped for.

Frequently Asked Questions

How long does pediatric brain tumour surgery take?

Most operations last between three and ten hours, depending on the tumour’s size, location, and complexity. Skull-base or deep-seated tumours can take longer. The team will give you a rough estimate, but the actual time depends on what is found in surgery.

Will my child’s head be shaved?

In most pediatric units, only a small strip of hair around the incision is shaved, not the whole head. Some hospitals avoid shaving altogether. Hair regrows over the incision in the months after surgery.

Will the scar be visible?

Incisions are usually placed where hair will cover them once it regrows. The visible line tends to fade over the first year. Surgeons aim for cosmetic closure.

How soon will we know what kind of tumour it is?

An initial microscopic diagnosis is often available within a few days. Full molecular characterisation, which now guides treatment for many pediatric tumours, can take one to three weeks. Treatment decisions are usually made after the complete picture is in.

Will my child need chemotherapy or radiation after surgery?

It depends entirely on the type and grade of tumour and how much was removed. Some children need no further treatment. Others need chemotherapy, radiation, or both. The neuro-oncology team will explain the plan based on your child’s pathology.

When can my child return to school?

Many children return to school in some form within two to three months, often part-time at first. Children who need more rehabilitation, or who are starting chemotherapy or radiation, may return later or in a more graduated way.

Can my child play sports again?

Light activity is usually allowed once the wound has healed. Contact sports and activities with significant risk of head impact are typically restricted for several months and sometimes longer, depending on the surgery. Your neurosurgeon will give specific timelines.

Will my child be the same after surgery?

Many children recover fully, especially after surgery for accessible, well-defined tumours. Some children live with changes — in movement, learning, behaviour, hormones, or vision — that the family and care team work to support. Rehabilitation in the months after surgery can make a real difference. The honest answer is that this varies child by child, and the medical team can give you a clearer picture as recovery unfolds.

How often will my child need MRI scans?

Follow-up MRI scans are usually frequent in the first one to two years (often every three to six months) and gradually space out if everything is stable. The exact schedule depends on the tumour type and treatment plan.

What does it mean if the surgeon could not remove all the tumour?

For many tumours, surgeons deliberately leave a small amount of tissue behind to protect critical brain function. Residual tumour is then watched on scans, treated with chemotherapy or radiation, or considered for a later second operation. Leaving some tumour is not a failure — it is often the safest choice for your child’s long-term outcome.

Conclusion

A diagnosis of a brain tumour in your child changes the ground under your feet. The decisions are heavy, the language is new, and the timelines feel urgent. Pediatric brain tumour surgery is recommended when it offers a real path forward — relieving pressure, removing as much tumour as is safely possible, and giving the rest of the care team the tissue diagnosis they need to plan what comes next.

Modern pediatric neurosurgery is far more than the operation itself. It is a process built around your child by a team: neurosurgeons, neuro-oncologists, anaesthesiologists, intensive care doctors, nurses, therapists, child life specialists, and the family. Recovery often takes months, sometimes longer, and it is rarely a straight line. There are setbacks and surprises and, alongside them, real progress.

What is clear from decades of pediatric neuro-oncology experience is that children are remarkably resilient. Their developing brains adapt, often in ways that surprise the adults around them. Many children come through this journey and reclaim their childhood — school, friends, play, growing up — with the close support of their medical team and the people who love them.