Ependymoma is a glial tumour that grows from ependymal cells lining the ventricles of the brain and the central canal of the spinal cord. It can affect children and adults, and the WHO 2021 classification divides it into supratentorial, posterior fossa and spinal groups based on location and molecular features.

Why does the molecular group matter so much?

Because two tumours that look identical under the microscope can behave very differently. ZFTA-fusion supratentorial tumours, PFA and PFB posterior fossa groups and MYCN-amplified spinal ependymomas each have distinct outlooks and are increasingly used to shape treatment intensity, radiotherapy planning and eligibility for clinical trials.

Why is the extent of surgery so important?

Complete removal of the visible tumour - a gross total resection - is the single strongest prognostic factor across almost every ependymoma group. That is why surgery should be done in a specialist neurosurgical centre with intraoperative imaging and experienced surgeons, and why a planned second-look operation is sometimes offered.

When is proton beam therapy preferred over standard radiotherapy?

Proton beam therapy delivers a similar tumour dose while sparing surrounding developing brain tissue, hearing structures and endocrine organs. It is preferred for most children and for selected adults - especially younger patients or those with tumours close to critical structures. Referrals go through NHS England specialist commissioning.

Does chemotherapy work for ependymoma?

Chemotherapy has a limited established role. In very young children it can be used to delay radiotherapy until the brain is more developed, and molecularly guided drugs are being tested in trials for high-risk groups. For most patients, surgery plus radiotherapy remains the backbone of treatment.

What does long-term follow-up look like?

Follow-up is lifelong and specialist-led. It combines regular MRI of the brain and spine, neurological review, endocrine and hearing checks, neurocognitive support and rehabilitation. Late effects of radiotherapy can appear years later, so a survivorship clinic in a specialist commissioned centre is important.

Health condition · Clinically reviewed

Ependymoma, specialist neurosurgery, proton beam therapy and long-term care.

Uncommon but treatable - the details of where the tumour sits, its molecular group and how completely it can be removed drive everything that follows.

Jump to treatment

A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Why trust this guide

01

Clinically reviewed

Written by our editorial team and reviewed by a UK neuro-oncology clinician before publication.
02

Sourced from guidance

Checked against NICE, NHS England specialist commissioning, EANO and WHO CNS5 sources you can see at the end.
03

Current for 2026

Reflects the WHO 2021 molecular classification, proton beam therapy pathways and UK specialist neuro-oncology practice.

Key facts

Ependymoma at a glance.

The essentials, in plain English - what it is, where it grows, and how UK specialist teams treat it today.

What it is

A glial tumour arising from the ependymal cells that line the ventricles of the brain and the central canal of the spinal cord.
Molecular groups

WHO 2021 classifies ependymomas by location and molecular profile - supratentorial (ZFTA, YAP1), posterior fossa (PFA, PFB) and spinal (including MYCN-amplified).
Grades

Most are WHO grade 2 or 3. Grade behaves differently across molecular groups, so the whole picture matters.
Who it affects

Bimodal age pattern - children aged 5 to 9 with posterior fossa disease and adults with spinal ependymomas.
Presentation

Depends on where the tumour sits - raised intracranial pressure and hydrocephalus, focal neurology or back pain and weakness in spinal disease.
Cornerstone of care

Maximal safe surgical resection is the single strongest prognostic factor - specialist neurosurgery matters.

Why this guide matters

A rare tumour, a specialist pathway.

Ependymoma is uncommon and biologically diverse. The three principles below shape almost everything on this page.

Molecular group drives care

Location plus WHO 2021 molecular profile - ZFTA, YAP1, PFA, PFB, MYCN - increasingly shapes prognosis and treatment intensity.
Surgery matters most

Maximal safe resection in a specialist neurosurgical centre is the strongest prognostic factor, often supported by a planned second-look operation.
Radiotherapy is usually essential

Focal radiotherapy - photon or proton beam - is a cornerstone of care, with proton beam therapy preferred for most children and selected adults.

How the diagnosis is made

From first symptoms to a specialist plan.

The steps a UK neuro-oncology team will normally follow - so you know what to expect and why each piece of information matters.

Phase 1 · Assessing

Symptoms, imaging and CSF

Phase 2 · Confirming

Biopsy and molecular diagnosis

Phase 3 · Preparing

MDT plan and baseline function

01

Assessing

Neurological assessment

A careful history and examination looking for headaches, morning vomiting, unsteadiness, focal weakness or back pain and altered bladder or bowel function.
02

Assessing

MRI brain and whole spine

Contrast-enhanced MRI of the entire neuraxis is essential - ependymomas can drop metastases along the CSF pathway.
03

Assessing

CSF cytology

Lumbar puncture (when safe) samples the cerebrospinal fluid to look for tumour cells that indicate leptomeningeal spread.
04

Confirming

Specialist biopsy or resection

Tissue is obtained by an experienced neurosurgeon - often at the time of definitive surgery in a specialist centre.
05

Confirming

Molecular neuropathology

Integrated diagnosis using histology plus molecular testing (ZFTA and YAP1 fusions, PFA and PFB methylation groups, MYCN) - reviewed by specialist paediatric or adult neuropathology.
06

Preparing

Neuro-oncology MDT

The case is discussed at a specialist neuro-oncology multidisciplinary team so surgery, radiotherapy and any trial options are planned together.
07

Preparing

Baseline function and imaging

Neurocognitive, endocrine and functional baselines before treatment help guide rehabilitation and long-term survivorship care.

Typical timeline: from suspicious MRI to a specialist MDT plan within a small number of weeks.

Symptoms

What ependymoma can look like.

Symptoms depend heavily on where the tumour sits - the ventricles, the posterior fossa or the spinal cord - and how quickly it is growing.

Headaches and morning vomiting

Classic signs of raised intracranial pressure - often worse on waking and with straining.
Hydrocephalus

Obstruction of CSF flow, particularly with posterior fossa tumours, can cause rapid neurological deterioration.
Ataxia and balance problems

Posterior fossa ependymomas frequently disturb coordination, gait and eye movements.
Cranial nerve signs

Double vision, facial weakness, swallowing difficulty or hearing changes can point to brainstem involvement.
Back pain and radicular pain

Spinal ependymomas often present with progressive back pain, sometimes radiating down a limb.
Limb weakness and numbness

Progressive motor or sensory change in the arms or legs deserves urgent spinal imaging.
Bladder or bowel change

New urinary retention, incontinence or bowel disturbance with back pain is a red flag for cord compression.
Red flag - rapid deterioration

Reduced consciousness, seizures or acute focal deficit needs emergency neurosurgical assessment.

Treatment

How ependymoma is treated in the UK.

Specialist surgery first, followed by focal radiotherapy - proton beam therapy where indicated - with chemotherapy in defined situations and trials for high-risk molecular groups.

Maximal safe resection

The single most important intervention - gross total resection consistently improves outcomes. Done in a specialist neurosurgical centre.
Second-look surgery

Where safe, a planned re-operation to remove residual tumour is considered before radiotherapy - the aim is the smallest possible remnant.
Adjuvant photon radiotherapy

Focal radiotherapy to around 54 to 59.4 Gy (commonly 55.8 Gy) after surgery improves local control for most intracranial ependymomas.
Proton beam therapy

Preferred for children and selected adults - proton beam therapy delivers a similar tumour dose while sparing developing brain and cochlea. See our guide to proton beam therapy.
Craniospinal radiotherapy

Reserved for disseminated disease with positive CSF cytology or drop metastases on MRI.
Stereotactic radiosurgery

Gamma Knife or linac-based radiosurgery can be used for small, well-defined residual or recurrent lesions in adults.
Chemotherapy

Has a limited established role in ependymoma. Used in very young children to defer radiotherapy and in emerging clinical trials for high-risk molecular groups.
Clinical trials

Molecularly guided trials are open through UK specialist centres - ask the MDT whether a trial fits the pathology and stage.

Related treatments

Read more about the specific treatments used for ependymoma: proton beam therapy, Gamma Knife radiosurgery, tumour molecular profiling and acquired brain injury rehabilitation.

What this guide is based on

The sources behind every claim on this page.

UK national guidance, NHS England specialist commissioning and international neuro-oncology standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your neuro-oncology team knows the specifics of your case and imaging. If anything on this page raises a concern, please raise it with them directly.

WHO Classification of Tumours of the Central Nervous System, 5th edition (2021).
European Association of Neuro-Oncology (EANO). Guideline on the diagnosis and treatment of ependymal tumours.
NHS England. Service specification for neuro-oncology and specialist paediatric neuro-oncology.
NHS England. Clinical commissioning policy for proton beam therapy.
NICE guidance on brain tumours (primary) and metastatic brain tumours in adults (NG99).

Red flags

When to seek urgent care.

Most changes are managed in scheduled clinic appointments. These situations are not - and need contact with the specialist team, the GP or emergency services.

Rapid reduction in consciousness

Drowsiness, confusion or coma with a known posterior fossa tumour can signal acute hydrocephalus - an emergency.
New seizures

A first seizure with a supratentorial mass needs urgent neurology and neurosurgery input.
Cauda equina features

Saddle anaesthesia, bilateral leg weakness, urinary retention or bowel dysfunction with back pain requires emergency MRI and neurosurgical review.
Progressive cord signs

Worsening spasticity, sensory level or gait deterioration should not wait for a routine outpatient appointment.
Postoperative deterioration

New deficits or fever after surgery need urgent review at the operating centre - not the local emergency department alone.
Signs of leptomeningeal spread

Cranial nerve palsies, back pain with new bladder symptoms or unexplained headaches during follow-up warrant urgent MRI of the whole neuraxis.
Late radiotherapy effects

New endocrine, cognitive, hearing or vascular symptoms years after treatment need specialist late-effects assessment.
Suspected recurrence

Any change on surveillance MRI should be discussed at the neuro-oncology MDT before further treatment.
Psychological distress

Living with a brain or spinal tumour is hard - low mood, anxiety or trauma responses deserve specialist psycho-oncology support.

Living with it

A specialist condition, with lifelong follow-up.

Life after ependymoma treatment blends surveillance, rehabilitation and late-effects care - the four points opposite make the biggest difference.

A quiet reminder

You are not on your own with this.

A specialist commissioned centre stays with you long after treatment ends - through surveillance, survivorship and, if needed, further intervention.

01 Team

Stay in specialist care

Ependymoma is uncommon - long-term follow-up in a specialist neuro-oncology centre matters, even when things are stable.
02 Surveillance

Keep to your MRI schedule

Regular MRI of the brain and spine picks up recurrence early, when re-treatment options are widest.
03 Rehab

Rehabilitation is part of treatment

Neuro-rehabilitation, physiotherapy, occupational therapy and speech and language therapy help function and quality of life.
04 Late effects

Watch for late effects

Endocrine, cognitive, hearing and vascular effects can appear years after radiotherapy - a survivorship clinic will screen and treat early.

Frequently asked

Everything we get asked about ependymoma.

Quick answers on molecular groups, surgery, proton beam therapy, chemotherapy and long-term follow-up.

What is ependymoma?

Ependymoma is a glial tumour that grows from ependymal cells lining the ventricles of the brain and the central canal of the spinal cord. It can affect children and adults, and the WHO 2021 classification divides it into supratentorial, posterior fossa and spinal groups based on location and molecular features.
Why does the molecular group matter so much?

Because two tumours that look identical under the microscope can behave very differently. ZFTA-fusion supratentorial tumours, PFA and PFB posterior fossa groups and MYCN-amplified spinal ependymomas each have distinct outlooks and are increasingly used to shape treatment intensity, radiotherapy planning and eligibility for clinical trials.
Why is the extent of surgery so important?

Complete removal of the visible tumour - a gross total resection - is the single strongest prognostic factor across almost every ependymoma group. That is why surgery should be done in a specialist neurosurgical centre with intraoperative imaging and experienced surgeons, and why a planned second-look operation is sometimes offered.
When is proton beam therapy preferred over standard radiotherapy?

Proton beam therapy delivers a similar tumour dose while sparing surrounding developing brain tissue, hearing structures and endocrine organs. It is preferred for most children and for selected adults - especially younger patients or those with tumours close to critical structures. Referrals go through NHS England specialist commissioning.
Does chemotherapy work for ependymoma?

Chemotherapy has a limited established role. In very young children it can be used to delay radiotherapy until the brain is more developed, and molecularly guided drugs are being tested in trials for high-risk groups. For most patients, surgery plus radiotherapy remains the backbone of treatment.
What does long-term follow-up look like?

Follow-up is lifelong and specialist-led. It combines regular MRI of the brain and spine, neurological review, endocrine and hearing checks, neurocognitive support and rehabilitation. Late effects of radiotherapy can appear years later, so a survivorship clinic in a specialist commissioned centre is important.

Ependymoma, specialist neurosurgery, proton beam therapy and long-term care.

Why trust this guide

Clinically reviewed

Sourced from guidance

Current for 2026

Ependymoma at a glance.

A rare tumour, a specialist pathway.

From first symptoms to a specialist plan.

Neurological assessment

MRI brain and whole spine

CSF cytology

Specialist biopsy or resection

Molecular neuropathology

Neuro-oncology MDT

Baseline function and imaging

What ependymoma can look like.

Headaches and morning vomiting

Hydrocephalus

Ataxia and balance problems

Cranial nerve signs

Back pain and radicular pain

Limb weakness and numbness

Bladder or bowel change

Red flag - rapid deterioration

How ependymoma is treated in the UK.

Maximal safe resection

Second-look surgery

Adjuvant photon radiotherapy

Proton beam therapy

Craniospinal radiotherapy

Stereotactic radiosurgery

Chemotherapy

Clinical trials

The sources behind every claim on this page.

When to seek urgent care.

Rapid reduction in consciousness

New seizures

Cauda equina features

Progressive cord signs

Postoperative deterioration

Signs of leptomeningeal spread

Late radiotherapy effects

Suspected recurrence

Psychological distress

A specialist condition, with lifelong follow-up.

Stay in specialist care

Keep to your MRI schedule

Rehabilitation is part of treatment

Watch for late effects

Everything we get asked about ependymoma.

What is ependymoma?

Why does the molecular group matter so much?

Why is the extent of surgery so important?

When is proton beam therapy preferred over standard radiotherapy?

Does chemotherapy work for ependymoma?

What does long-term follow-up look like?

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