Medical Oncologist
CION Cancer Clinics
NF2 and hearing: the decisions families face, and when | CION Cancer Clinics
In NF2, the everyday threat is usually to hearing, not cancer. Benign tumours grow on the balance nerves on both sides of the head and slowly press on the hearing nerve beside them. This page walks through the decisions families face: when to treat, when to wait, which ear to protect, and how to plan for communication before hearing changes. At CION Cancer Clinics, our oncologists plan screening and care for families with an inherited cancer syndrome, explained in plain words.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
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On this page
- Why does NF2 affect hearing, and when do decisions come up?
- What can be done about a tumour on the hearing nerve?
- When do the big decisions usually come up?
- The terms you will meet, in plain language
- What this page cannot tell you
- Four things families believe about NF2 and hearing
- Common questions about NF2 and hearing
The short answer
Why does NF2 affect hearing, and when do decisions come up?
NF2 causes slow-growing, non-cancerous tumours called schwannomas on the nerves that carry balance signals from the inner ear to the brain. Almost everyone with NF2 develops them on both sides. As they grow, they press on the hearing nerve that runs right beside them, and hearing fades, usually over years rather than weeks.
The tumours are benign, and the decisions are still hard
These tumours do not spread the way a cancer does. The difficulty is where they sit. Every treatment that removes or shrinks them carries some risk to hearing and to the facial nerve next door. Waiting carries the risk that hearing is lost anyway. There is rarely one obviously right answer, and a good team will say so.
Decisions come in stages, not all at once
Most families face a handful of decision points spread over many years. They come at diagnosis, when a hearing test first shows a drop, when a scan shows fast growth, and when one ear can no longer hear. Each of those moments is easier to handle if it has been talked through before it arrives.
NF2 is a different condition from NF1. The name is shared. The gene and the problems are not.The four main options
What can be done about a tumour on the hearing nerve?
Your team will usually weigh four approaches. Most people with NF2 use more than one of them over a lifetime.
Careful watching
Regular MRI scans and hearing tests, with no treatment while the tumour is stable and hearing is holding. This is often the right choice for a small tumour that is not growing.
Usually suits
- Small, stable tumours
- Hearing that is still useful
- Nothing pressing on the brainstem
Surgery
A neurosurgeon, often working with an ear surgeon, removes all or part of the tumour. It can relieve pressure on the brainstem. It carries a real risk to the remaining hearing on that side and to the nerve that moves the face.
Ask how often the team operates on NF2 tumours. Experience matters here.Focused radiation
A precise dose of radiation aimed at the tumour to stop it growing. It is used far more cautiously in NF2 than for a single one-sided tumour, because it tends to work less well and makes any later operation harder.
Medicine
A drug called bevacizumab, given through a drip, can shrink some of these tumours and steady hearing in some people. It does not work for everyone and it is given long term. Blood pressure and urine need regular checks while you take it.
Not sure whether this applies to you?
Ask an oncologistThe moments that matter
When do the big decisions usually come up?
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At diagnosis: setting the baseline
A first MRI of the brain and spine and a full hearing test set the starting point. Every later decision is measured against these, so keep copies of the reports and the scan discs.
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When a hearing test first shows a drop
This is often the moment to discuss treatment for that side. It is also the moment to start planning how the person will communicate, before it becomes urgent.
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When a tumour grows fast or presses on the brainstem
Hearing then becomes one factor among several. Pressure on the brainstem can affect swallowing, balance and breathing, and treatment usually cannot wait.
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When one ear stops hearing
Attention turns to protecting the other ear. Many teams become more careful about any treatment on the only hearing side, and may prefer medicine or watching over surgery.
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When both ears are affected
The discussion moves to hearing devices, lip-reading and sign language, and to how school, work and family life will adapt around the change.
On your reports
The terms you will meet, in plain language
- Vestibular schwannoma
- A benign tumour on the balance nerve. Older reports call it an acoustic neuroma, which means the same thing.
- NF2-related schwannomatosis
- The newer name for NF2. You may see either name on a letter.
- Audiogram
- A hearing test chart showing the quietest sounds you can hear at different pitches.
- Speech discrimination score
- How many spoken words you understand correctly. It often matters more for daily life than the audiogram does.
- Cochlear implant
- A device that stimulates the hearing nerve directly. It only works if that nerve still carries signals.
- Auditory brainstem implant
- A device placed on the brainstem itself, used when the hearing nerve has been lost. It usually gives awareness of sound and helps with lip-reading, rather than clear speech.
- Mosaic
- The gene fault is present in only some of the body's cells. It can make a blood test come back normal.
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One thing that cannot wait
If hearing drops suddenly in one ear, over hours or a day, treat it as urgent. See an ear specialist or go to an emergency department the same day and say the person has NF2. Sudden hearing loss is sometimes treated with steroid medicine, which works best when started early. New weakness on one side of the face, new trouble swallowing, or a severe headache with vomiting or unusual drowsiness also needs same-day care.
Being straight with you
What this page cannot tell you
It cannot tell you which option is right for your tumour or your child's. That depends on the size and growth of each tumour, the hearing in each ear, age, other tumours in the brain and spine, and what matters most to the person. Those choices belong in a room with a specialist NF2 team who have seen the scans over time.
It cannot read a scan or a genetic report
Two tumours of the same size can behave very differently. What your specific variant means is a question for the counsellor who ordered the test. What a scan shows is a question for the team that compares it with the last one.
Who this does not apply to
Most people with a single acoustic neuroma on one side do not have NF2. A one-sided tumour found in an older adult, with no other tumours and no family history, is usually a one-off. Genetic testing is mainly offered when tumours appear on both sides, at a young age, or alongside other nerve and brain tumours.
Studies comparing the treatment options in NF2 are small. Ask your team about their own experience, and it is reasonable to seek a second opinion before surgery.Commonly believed
Four things families believe about NF2 and hearing
"Take the tumours out early and the hearing will be saved."
Surgery on a small tumour sometimes keeps hearing, but it cannot promise to. Many teams prefer to watch a stable tumour while hearing is still useful, because the operation itself can end hearing on that side.
"Radiation is the gentle option."
It avoids an operation, but in NF2 it works less reliably than for a single one-sided tumour. It can also make later surgery harder, so doctors weigh it carefully, especially in younger people.
"Once the hearing has gone, nothing more can be done."
Cochlear implants help some people whose hearing nerve still works, and brainstem implants help others. Lip-reading, sign language and live captions on a phone keep people connected, and they are easiest to learn early.
"The parent's NF2 was mild, so the child's will be mild too."
Severity can differ within one family. A parent with a mosaic fault can have a child who carries it in every cell and has more tumours. The child needs their own surveillance plan.
Questions we are asked
Common questions about NF2 and hearing
Will everyone with NF2 lose their hearing?
Not everyone loses all of it, and the pace varies a great deal. Some people keep useful hearing in one or both ears for many years. Others lose it earlier. Regular hearing tests and scans let the team act before a change becomes permanent, where that is possible.
How often are hearing tests and scans needed?
Most people with NF2 have a hearing test and a brain MRI about once a year, and more often while a tumour is growing or after treatment. The spine is usually scanned less often. Your team sets the schedule based on how each tumour is behaving.
Should we learn sign language before hearing is lost?
Many families find it far easier to start early, while hearing is still good enough to learn alongside it. Lip-reading practice helps too. Learning together means the person is never cut off from conversation at home. Ask your team where Indian Sign Language classes are run near you.
Can a cochlear implant help in NF2?
Sometimes. It needs a hearing nerve that still carries signals, so it is mainly considered when the tumour is stable or was treated with the nerve left in place. A test before the operation checks whether the nerve responds.
What is bevacizumab and is it used in India?
It is a drug given through a drip that starves the tumour of its blood supply. It is widely available in India because it is also used for several cancers. Using it for NF2 is a specialist decision, and it needs regular blood pressure and urine checks.
Is NF2 passed on to children?
Yes. A parent who has NF2 in every cell has a one in two chance of passing it to each child. If the parent is mosaic, the chance is lower. A counsellor can explain which applies to your family and when the children should be tested.
When should the children of a parent with NF2 be tested?
Usually in childhood, because checks for NF2 start young and a negative result can spare a child years of scans. Testing is simplest when the parent's exact gene fault is already known, so the parent is normally tested first.
Where can we be seen for NF2?
NF2 needs a team: a neurosurgeon, an ear specialist, a hearing specialist, a neurologist and a genetic counsellor who talk to each other. Call the CION helpline and we will help you find the right people, whether within CION or at a specialist centre elsewhere.
Your Specialists
Meet CION's oncologists. Bring your family history or genetic report to them.
Our medical oncologists see people with a strong family history of cancer, arrange genetic counselling and testing where it fits, and plan the checks that follow.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
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Sources
- GeneReviews (NCBI Bookshelf) — NF2-Related Schwannomatosis
- NHS — Neurofibromatosis type 2
- National Institute on Deafness and Other Communication Disorders — Vestibular Schwannoma (Acoustic Neuroma) and Neurofibromatosis
- National Institute on Deafness and Other Communication Disorders — Sudden Deafness
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
NF1, NF2 and schwannomatosis: three different conditionsWhy NF2 is not the same as NF1, and what each one involvesMosaicism explainedWhy a blood test can miss NF2 in someone who has itWhich syndromes do require childhood testingWhy NF2 is one of the conditions tested in childrenWhat a genetic counsellor doesWho explains your result, and what happens in the room
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