Medical Oncologist
CION Cancer Clinics
NF1 surveillance through childhood: the checks and why they matter | CION Cancer Clinics
A child with NF1 needs a yearly review with a doctor who knows the condition, and regular eye examinations by a specialist. Most of the checking is done by looking, measuring and asking questions, not by scans. This page explains what each review covers, how the checks change as a child grows, and which signs mean you should not wait for the next visit. 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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The short answer
What checks does a child with NF1 need?
A child with NF1 needs a full review with a doctor who knows the condition every year, plus a detailed eye examination by an eye specialist. Most of the checking is done by looking, measuring and asking questions. Scans are ordered when there is a reason, not routinely.
What the reviews are looking for
The yearly visit is designed to catch the few problems in NF1 that are easier to manage when found early. The main ones are a tumour on the nerve behind the eye, a curve in the spine, raised blood pressure, a growing deep lump, and difficulties with learning. Most children never develop most of these, but nobody can say in advance which child will.
Why a child who seems well still needs them
Young children rarely complain that their sight is getting worse. They adjust without noticing. A slow curve in the back, or a gently rising blood pressure, causes no symptoms at first either. The review exists to find these things before the child or the parent can see them.
Keep every review report in one folder, and bring it to each visit. Changes over time matter more than any single check.At each yearly review
What does the doctor check at every visit?
A good NF1 review follows the same list each year, so that small changes stand out.
Eyes and vision
An eye specialist tests sight, colour vision where the child is old enough, and looks at the back of the eye. This is the main way an optic pathway tumour is found in a child without symptoms.
Also noted
- Small harmless spots on the iris
- Any squint or bulging eye
- Changes since the last visit
Growth, puberty and blood pressure
Height, weight and head size are plotted on a chart. Signs of puberty starting unusually early are checked. Blood pressure is measured every time, because it can rise in NF1 even in childhood.
Bones and spine
The back is checked for a curve, and the legs for bowing of the shin bone. Both are easier to manage when they are found early and followed by an orthopaedic specialist.
Skin, lumps and learning
New skin changes and any deeper lump are examined and measured. The doctor also asks how the child is doing at school, with friends and with attention, and refers early if needed.
Not sure whether this applies to you?
Ask an oncologistStage by stage
How do the checks change as a child grows?
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Diagnosis in babyhood
NF1 is often suspected from café-au-lait patches. A first full examination, an eye review and a family history are arranged, and parents are usually examined too.
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The early years
This is when optic pathway tumours are most likely to appear, so eye examinations are most frequent in early childhood. Development is watched closely, and bowing of a leg is looked for.
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The school years
Eye checks continue, often less frequently as the child gets older. Learning and attention become a bigger part of each visit, and the spine is checked for a curve as the child grows.
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Puberty and the teenage years
Skin lumps usually start to appear. The doctor watches puberty timing, blood pressure and any deep lump. Teenagers start to hear the explanation directly, not only through their parents.
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Moving to adult care
Before care passes to adult doctors, some centres offer a whole-body scan to map any deep lumps. A clear written summary goes with the young person.
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Signs in a child with NF1 that cannot wait
If your child suddenly cannot see properly, has an eye that starts to bulge, has a severe headache with vomiting, has a seizure, or develops new weakness in an arm or a leg, go to the nearest emergency department the same day. Tell them your child has NF1. Do not wait for the next yearly review.
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On the review report
Which words will you see in your child's reports?
- Optic pathway glioma
- A slow-growing tumour on the nerve that carries sight from the eye to the brain. Many never cause problems and need only watching.
- Lisch nodules
- Tiny harmless spots on the coloured part of the eye. They help confirm NF1 and do not affect sight.
- Plexiform neurofibroma
- A larger, deeper growth along a nerve, present from birth. It is measured over time because a small minority can change.
- Scoliosis
- A sideways curve of the spine. In NF1 it can appear early, and some types need closer follow-up.
- Tibial bowing
- An outward curve of the shin bone, usually seen in infancy. It needs an orthopaedic specialist's advice to protect the bone.
- Early puberty
- Signs of puberty much younger than usual. In NF1 it can be a clue to a tumour near the base of the brain.
Being straight with you
What this page cannot tell you
It cannot give you your child's own schedule. How often the eyes are checked, and whether a scan is needed, depends on the child's age, what earlier reviews found and any symptoms. The doctor who follows your child sets it, and it may change from year to year.
It cannot interpret a scan or a result
A report that mentions a glioma or a plexiform neurofibroma needs to be explained by the specialist who ordered it. Many of these findings only need watching. What your child's genetic result means is a question for the counsellor who ordered the test.
Who this does not apply to
This page is about children with NF1. Adults, and children with NF2 or schwannomatosis, follow different plans. A child with one or two café-au-lait patches and no other signs does not need this programme until NF1 has actually been diagnosed. Parents who travel from the districts can often have the eye and blood pressure checks done locally, with the specialist review once a year.
Ask for review reports in writing, so a local doctor can follow the same plan between visits.Commonly believed
What do parents believe about NF1 checks?
"A brain scan every year would be safer."
Most guidelines do not advise routine scans for a child with no symptoms. Young children often need sedation for an MRI, and many findings would only ever need watching. Scans are ordered when a review or a symptom gives a reason.
"The eye check was normal, so we can skip the next one."
An optic pathway tumour can appear after a normal check, especially in the early years. Each review covers only that moment, which is why the eye checks are repeated.
"NF1 means my child will get cancer."
Most children with NF1 never develop a cancer. The risk of certain tumours is raised, which is exactly why the reviews exist. Many tumours found in NF1 are slow-growing and benign.
"If something is found, nothing can be done."
Most findings need watching only. When treatment is needed, there are options, including chemotherapy for some eye nerve tumours and newer tablet medicines for some deep lumps.
Questions we are asked
Common questions about NF1 checks in childhood
Which doctor should lead my child's NF1 care?
Usually a paediatrician or paediatric neurologist with experience of NF1, working with an eye specialist. Other specialists are brought in when needed. One doctor should hold the full picture and keep the yearly reviews on track.
How often are the eyes checked?
Most often in early childhood, when optic pathway tumours are most likely to appear, and less often through the teenage years. Your child's eye specialist sets the exact gap based on age and earlier findings.
Does my child need an MRI?
Not routinely, in most guidelines. An MRI is ordered if an eye check, a symptom, early puberty or a growing lump gives a reason. Some centres do one baseline scan. Ask your doctor what they advise and why.
Why is blood pressure checked in a child?
Children with NF1 can develop high blood pressure, sometimes because an artery to the kidney is narrowed. It causes no symptoms at first, so it is only found by measuring. A raised reading is repeated and looked into.
Should brothers and sisters be checked too?
If a parent has NF1, each child has a one in two chance of inheriting it, and a simple skin and eye examination is usually the first step. If neither parent has it, siblings are rarely affected. Your counsellor will advise.
What if my child is found to have an optic pathway glioma?
Many of these tumours never affect sight and need only closer eye checks and sometimes repeat scans. If vision starts to worsen, treatment, usually chemotherapy, is considered by a paediatric oncology team. Surgery is rarely used.
Are these checks covered by government schemes?
Coverage varies by scheme and hospital. Some investigations and treatments may be covered under Aarogyasri or Ayushman Bharat, while outpatient reviews often are not. Ask the hospital desk before each visit which parts are covered.
Where do we start if our child has just been diagnosed?
Ask for a full NF1 review and an eye examination, and start a folder for every report. If you are unsure who manages NF1 near you, call the CION helpline and someone will guide you to the right clinic.
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) — Neurofibromatosis 1
- NHS — Neurofibromatosis type 1
- MedlinePlus Genetics — Neurofibromatosis type 1
- National Institute of Neurological Disorders and Stroke — Neurofibromatosis
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
Recognising when an NF1 lump has changedThe warning signs in a deep lumpLearning and development in NF1The part of each review about school and attentionLiving with visible skin changesWhat the spots and lumps are, and what helpsSurveillance programmes for predisposed childrenHow NF1 checks compare with other childhood syndromes
Talk to us
Not sure your child's NF1 checks are on track?
Bring your child's reports and we will help you see what has been covered and what is still due. One helpline serves every CION centre.