Medical Oncologist
CION Cancer Clinics
NF1 surveillance: the check-ups you need, and when | CION Cancer Clinics
People with NF1 need regular check-ups for life, but most of it is simple: a yearly examination, a blood pressure reading and, in young children, eye checks. Women add breast screening from around thirty. Scans are arranged when symptoms appear, not routinely for everyone. This page sets out the schedule by age, the signs that cannot wait, and what surveillance cannot do. At CION Cancer Clinics, our oncologists explain what a gene result means for you and your family, and plan the checks that follow.
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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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The short answer
What does NF1 surveillance actually involve?
Mostly a yearly visit to a doctor who knows NF1. They examine the skin and any lumps, check blood pressure and ask about new symptoms. Children also have regular eye checks and a review of growth and learning. Women add breast screening from around thirty.
Why it is built around symptoms
Many problems in NF1 are first noticed by the person or a parent. That is why international guidance, including the American Academy of Pediatrics advice for children, relies on regular examination plus a prompt scan when something changes. It does not recommend routine scans for everyone.
Why it is worth doing
Most people with NF1 never develop a serious complication. Surveillance exists for the minority who do. A tumour on the nerve of vision, a nerve lump turning into cancer, or high blood pressure are all easier to deal with when they are found early. The check itself is simple, quick and usually painless.
Surveillance is not treatment. It is a way of noticing changes early, while more can be done about them.At each review
What gets checked at an NF1 review?
The same four areas come up at almost every visit. Which ones matter most depends on age.
Skin and lumps
The doctor looks at skin neurofibromas and feels any deeper lumps. What matters is change: in size, in firmness, or in pain.
Keep a note of
- Any lump that has grown since the last visit
- Any lump that has become painful
- Photos of larger lumps, dated
Eyes, in children
An eye specialist checks vision and the back of the eye. They are looking for a tumour on the nerve that carries vision, which usually appears in early childhood.
Blood pressure, at every age
High blood pressure is more common in NF1. A high reading leads to further tests for a narrowed kidney artery or an adrenal tumour.
Growth, spine and learning, in children
Height, head size, a curve in the spine, early or late puberty and progress at school are all reviewed. Learning support works best when it starts early.
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What cannot wait for the next review
Sudden weakness in the arms or legs, or losing control of the bladder or bowel, means going to an emergency department the same day. A nerve lump may be pressing on the spinal cord. A lump that becomes painful, hard or grows quickly, or a child whose sight suddenly worsens, needs to be seen within days. Do not have a changing lump simply cut out at a local clinic before it has been scanned by a team that knows NF1.
The schedule by age
How often are checks needed at each age?
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Babies and young children
A yearly examination by a doctor familiar with NF1, with blood pressure, growth and development checked. A yearly eye examination by an eye specialist, because young children rarely complain of poor sight.
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School years
The yearly review continues. Eye checks are usually yearly until around eight, then less often through the teens. Learning and attention are reviewed with the school in mind.
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Teenage years
The spine and the timing of puberty are watched. Some centres offer a one-time whole-body MRI around this time to map deeper lumps. Plan the move to an adult doctor before leaving the children's clinic.
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Adults
A yearly examination of the skin and lumps, and a blood pressure reading. New symptoms are reported as they happen, not saved for the next visit.
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Women from around thirty
A yearly mammogram, with a breast MRI considered through the thirties and forties, because breast cancer risk is raised before fifty.
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On the referral letter
What do the surveillance terms mean?
- Slit-lamp examination
- An eye check using a microscope with a bright light. It shows small spots on the iris and the health of the eye.
- Optic pathway glioma
- A usually slow-growing tumour of the nerve that carries vision. Many never need treatment, but they are watched.
- Whole-body MRI
- A long MRI scan covering the body from head to feet, used to find deep lumps that cannot be felt.
- PET-CT
- A scan showing which tissues are most active. It helps tell whether a changing nerve lump may have turned into cancer.
- Scoliosis
- A sideways curve in the spine. It is more common in children with NF1 and is checked at each review.
- MPNST
- Malignant peripheral nerve sheath tumour. A cancer that can arise in a neurofibroma, and the main reason lumps are watched.
Being straight with you
What this page cannot tell you
It cannot set your own schedule. A person with a large plexiform neurofibroma, a past tumour or high blood pressure will need more than the outline here. Your doctor adjusts the plan to what has already been found.
Guidance differs between countries
Doctors in different countries disagree on routine scans, especially whole-body MRI in adults. You may hear different advice from different specialists. That usually reflects the evidence being thin, not one of them being careless. Ask each one to explain their reasoning.
Who this does not apply to
Relatives with no signs of NF1 as adults, or who have tested negative for the family's change, do not need these checks. People with Legius syndrome, a milder look-alike, need far less. Mosaic NF1, affecting one part of the body, often needs a lighter plan.
If you travel from a district, ask whether eye, blood pressure and doctor reviews can be booked on the same day.Commonly believed
Four things families believe about NF1 check-ups
"Regular full-body scans are the safest option."
Most guidance does not recommend routine scans in people without symptoms. Young children often need sedation, and scans can find harmless things that lead to worry and more tests. Scans work best when aimed at a symptom.
"My child's eyes are fine now, so the eye checks can stop."
Tumours on the nerve of vision usually appear in early childhood, and young children rarely notice poor sight. Regular checks pick up changes before the child does.
"Surveillance just means waiting for cancer."
Most of it is about blood pressure, eyes, growth and noticing changes early. Most people with NF1 never develop cancer.
"I am an adult with no problems, so I can stop coming."
Several NF1 risks begin or rise in adult life, including nerve lump cancers, high blood pressure and breast cancer in women. The yearly review matters more now, not less.
Questions we are asked
Common questions about NF1 surveillance
How often should a child with NF1 see a doctor?
At least once a year, with a doctor who knows NF1, plus a yearly eye examination in early childhood. More frequent visits are needed if a problem is being watched. Keep a folder of every report and bring it each time.
Does my child need a routine brain MRI?
Most guidance does not recommend one in a child without symptoms. An MRI is arranged for signs such as a change in vision, early puberty, frequent headaches or new weakness. Your doctor will decide when a scan is worth it.
What is a whole-body MRI, and do I need one?
It maps deep nerve lumps that cannot be felt. Some centres offer it once in the late teens or early adult life, so later changes can be compared. Practice varies, so ask whether it would change anything in your care.
Why is blood pressure checked every time?
High blood pressure is more common in NF1, even in children. Occasionally it is caused by a narrowed kidney artery or an adrenal tumour, both of which can be treated. The check takes a minute and costs almost nothing.
Which symptoms mean I should call before the next review?
Pain in a lump that does not settle, a lump that grows or hardens, new weakness or numbness, a change in vision, or severe headaches with a racing heart and sweating. In a young child, early signs of puberty also need a call.
Can we do some checks closer to home?
Blood pressure can be checked at any clinic and recorded in your folder. Eye examinations and scans need specialists. Ask whether several checks can be booked on one day to cut down the number of trips from your district.
Are these checks covered by Aarogyasri or insurance?
Scans to investigate a symptom are more often covered than routine checks. Cover varies by scheme and policy, so ask before booking. The helpline can tell you which schemes CION accepts at your nearest centre.
Do other family members need the same checks?
Only those who have NF1. A relative with no signs as an adult, or who tested negative for the family's change, does not. What your own result means is a question for the counsellor who ordered the test.
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)
Medical Oncologist
Medical Oncologist
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Our centres in and around Hyderabad
Addressed by landmark, because that is how this city navigates. One helpline books a consultation at any of these centres, and your team will tell you where counselling and testing take place.
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Sources
- American Academy of Pediatrics (Pediatrics) — Health Supervision for Children With Neurofibromatosis Type 1
- GeneReviews (NCBI) — Neurofibromatosis 1
- NCCN — Genetic/Familial High-Risk Assessment: Breast, Ovarian, and Pancreatic
- NHS — Neurofibromatosis type 1
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.
Talk to us
Not sure your NF1 check-ups are on track?
Tell us your age or your child's, and which checks have been done so far. We will help you set up a review with the right specialists. One helpline serves every CION centre.