Medical Oncologist
CION Cancer Clinics
Surveillance for DICER1 carriers: which checks, and when | CION Cancer Clinics
DICER1 carriers are offered planned checks so that a growth is found early, while it is small and easier to treat. The checks follow age. Chest and tummy imaging matter most in babies and young children. Thyroid ultrasound follows from later childhood, and girls and women also have pelvic ultrasound. This page explains each check, why it is done, and the warning signs to act on between scans. 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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On this page
The short answer
Why do DICER1 carriers need regular checks?
Surveillance means planned scans and check-ups for someone who is well, so that a growth is found while it is small and easier to treat. For DICER1 carriers, the checks follow age. The chest matters most in early childhood, the thyroid and ovaries later on.
What the checks are for
The rare lung tumour linked to DICER1 usually starts as a thin-walled air cyst in a baby or toddler. At that stage it can often be removed completely. Left alone, some cysts turn solid and become much harder to treat. That single fact is the reason early chest imaging exists.
Why the plan is personal
Who is offered them
Anyone with a confirmed DICER1 fault, whether they were tested after a child's illness or because a parent or sibling carries it. A relative who has not yet been tested may be offered some checks while waiting for their result, if they are a young child.
International expert groups, led largely by the DICER1 registry, have published a suggested schedule. Your child's specialist will adjust it to their age, sex, earlier treatment and what has already been found. Treat what follows as a map of the ground, not your child's own plan.
Checks are a way of finding problems early. They do not stop a growth from forming.Body part by body part
Which checks are usually suggested, and why?
Each check follows one of the growths DICER1 is known to cause.
Chest imaging
Chest X-rays several times a year through early childhood, with a small number of chest CT scans at set points. The aim is to spot a lung cyst before it changes.
An X-ray takes seconds. The CT scans are timed so that the fewest possible give the most useful picture of the growing lung.
Tummy ultrasound
Regular abdominal ultrasound in young children, looking for a cystic kidney growth. It uses no radiation and needs no injection. It is usually booked on the same day as the chest X-ray, so one trip covers both.
Thyroid ultrasound
A first neck ultrasound in later childhood, then repeated every few years into adult life. Sooner and more often after chemotherapy or radiation.
A lumpy thyroid is common in carriers. The scan is looking for the rare nodule that changes, not for any lump at all.Checks for girls and women
Pelvic ultrasound from late childhood, continuing well into adult life, for the rare ovarian tumour linked to DICER1.
Also often included
- A yearly eye check in young children
- A yearly full examination by the child's doctor
- Knowing which symptoms need a prompt visit
Not sure whether this applies to you?
Ask an oncologistBy age
How do the checks change as a child grows?
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Babies and toddlers
The busiest period. Chest X-rays and ultrasound of the tummy are repeated often, and a first chest CT is usually done in the early months. This is when the lung tumour is most likely.
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Early school years
Chest and tummy checks continue, often at longer gaps. Yearly eye checks and a first thyroid ultrasound are added around this stage or a little later.
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Around the start of the teens
Chest imaging usually stops once the high-risk lung years have passed. Girls begin pelvic ultrasound, and thyroid checks carry on.
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Adult life
Thyroid ultrasound every few years, and pelvic ultrasound for women. Most adults need little else beyond knowing their own warning signs.
!
One thing that cannot wait
A lung cyst can burst and let air leak around the lung. If a child who carries DICER1 suddenly becomes breathless, has chest pain, or breathes fast and looks unwell, go to the nearest emergency department the same day. Tell the doctors about DICER1 and ask them to look for a collapsed lung. Do not wait for the next scheduled check.
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The words you will meet, in plain language
- Surveillance
- Planned checks for someone who is well, to find a problem early.
- Chest CT
- A detailed X-ray scan of the chest. It shows small cysts better than a plain X-ray but uses more radiation, so it is used sparingly.
- Ultrasound
- A scan using sound waves. No radiation, no needle, and a child can stay awake throughout.
- Cystic nephroma
- A growth in the kidney made of fluid-filled pockets. In DICER1 carriers it is usually found in early childhood.
- Sertoli-Leydig cell tumour
- A rare ovarian tumour. It can make male-type hormones, causing a deep voice, extra hair or missed periods.
- Nodule
- A lump. Most thyroid nodules in carriers are harmless.
Being straight with you
What this page cannot tell you
It cannot give your child's own schedule. That depends on their age, what earlier scans showed and whether they have had treatment. What your specific variant means, and how closely it needs watching, is a question for the counsellor who ordered the test.
The evidence behind the schedule
The suggested checks come from expert agreement and registry data, not from large trials. Studies so far are small, and nobody yet knows the ideal gap between scans. That is why schedules differ a little between guidelines.
Who this does not apply to
These checks are for people with a confirmed DICER1 fault. A relative who tested negative for the family's fault does not need them. Nor does a child with an ordinary thyroid lump or chest infection and no DICER1 result.
Keeping it practical
Ultrasound can often be done nearer home in your district. Keep every report in one folder, and send copies to the team planning the checks, so each result is read against the last.
Commonly believed
Four things parents worry about with DICER1 checks
"All these X-rays will give my child cancer."
The schedule is built to keep radiation low. Plain chest X-rays use very little, CT is kept to a few set points, and ultrasound uses none. The specialist weighs this against the benefit of early finding.
"A normal scan means we can stop."
A normal result is reassuring for now. Growths can appear later, which is why checks are repeated through the ages when each one is most likely.
"Adults with DICER1 need the same checks as children."
They do not. Chest imaging is for early childhood. Adults mainly need thyroid checks, and women also need pelvic ultrasound.
"If a thyroid nodule is found, the thyroid must come out."
Most nodules are simply watched. Surgery is considered when a nodule grows, looks suspicious on scan or a needle test, or causes trouble with breathing or swallowing.
Questions we are asked
Common questions about DICER1 surveillance
When should checks start?
For a baby known to carry DICER1, chest and tummy checks usually start in the first months of life. If the fault is found in an older child, the specialist starts with whichever checks fit their age and catches up on any that were missed.
Does my child need sedation for the scans?
Ultrasound and X-ray need none. A chest CT is quick, and many children manage it awake. Very young children sometimes need a light sedative to lie still. The team will tell you in advance and explain how to prepare.
Is brain scanning part of the plan?
Not routinely. Brain growths linked to DICER1 are very rare. Instead, parents are told which signs to report, such as persistent headaches with vomiting, changes in vision or unusual weight gain in an infant.
What if a lung cyst is found?
It does not automatically mean cancer. The team will look at its size and appearance, and often advise removing it, because a cyst in a DICER1 carrier can change over time. A children's chest surgeon and oncologist usually plan this together.
Do boys need any checks after early childhood?
Mainly thyroid ultrasound every few years and an awareness of symptoms. Pelvic ultrasound is only for girls and women. Rare growths elsewhere are watched for through a yearly examination rather than routine scans.
Can the checks be done near home?
Ultrasound and chest X-ray often can, if the images and reports go to the specialist team. CT scans and any decision about surgery are better kept with one team who knows the full history.
Will the checks go on forever?
The chest and tummy checks stop after childhood. Thyroid and pelvic checks carry on into adult life, at longer gaps. The plan is reviewed as research changes and as your own history builds.
Who should plan the schedule?
A genetics team working with a children's oncologist. Call the CION helpline if you have a DICER1 result and no plan yet, and someone will point 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)
Medical Oncologist
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Our centres in and around Hyderabad
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Sources
- GeneReviews (NCBI) — DICER1-Related Tumor Predisposition
- MedlinePlus Genetics — DICER1 syndrome
- National Cancer Institute — Pleuropulmonary Blastoma Treatment (PDQ) - Patient Version
- National Cancer Institute — Childhood Thyroid Cancer Treatment (PDQ) - Patient Version
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
DICER1 syndrome in children: what to watch forThe signs to report between scansDICER1 and thyroid nodules in young peopleWhat happens when a thyroid scan finds a lumpDICER1 mutation: which cancers and what riskWhy each check is on the listDICER1 surveillance in children and adultsThe syndrome-level view of the same plan
Talk to us
Does your child have a DICER1 result but no check-up plan?
Tell us your child's age and what has been done so far. We will help you reach a team who can set out a schedule that fits. One helpline serves every CION centre.