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CION Cancer Clinics
DICER1 syndrome in children: the signs parents should know | CION Cancer Clinics
If your child carries a DICER1 fault, watch for changes in breathing, a swelling in the tummy, a lump in the neck, and changes in the eyes or nose. In girls, watch for unusual bleeding or male-type hormone signs. Most children with DICER1 grow up well. This page explains each sign, how checks change with age, and when to act the same day. 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 should parents of a child with DICER1 watch for?
Watch for changes in breathing, a swelling in the tummy, a lump in the neck, and changes in the eyes or nose. In girls, watch for unusual bleeding or signs of male-type hormones. Most children with a DICER1 fault grow up well, and planned scans do much of the watching for you.
Why childhood is the time that matters most
DICER1 helps organs form while a child is growing. That is why the tumours linked to it tend to appear while those organs are still developing. The most serious one, a rare lung tumour, is a risk in babies and young children. Other growths come later, in the school years and the teens. Each has its own window, and the checks follow those windows.
Scans and parents work together
Scans find growths that cause no symptoms. Parents notice the things that happen between scans. Neither replaces the other. A child who is being scanned on schedule still needs to be seen promptly if a new sign appears, even if the last scan was clear. You do not need to wait for the next appointment to raise a worry.
A DICER1 result tells you what to watch for. It does not mean your child will develop any of these tumours.Body area by body area
Which signs are worth reporting, and where?
These are the signs linked to DICER1 growths. Most coughs, tummy aches and nosebleeds in children have ordinary causes. The point is to mention them early, not to panic.
Chest and breathing
The rare lung tumour linked to DICER1 starts as air-filled cysts. A cyst can burst and let air leak around the lung, which causes sudden breathlessness or chest pain.
Mention promptly
- Fast or laboured breathing
- A cough or fever that keeps coming back
- Chest pain, or a child who suddenly tires
Tummy and kidneys
Benign kidney cysts can appear in young children, and rarer kidney tumours can too. They are often felt as a firm swelling while bathing or dressing the child.
Mention promptly
- A swollen or firm tummy
- Blood in the urine
Eyes, nose and head
A rare eye tumour can affect sight. A benign growth inside the nose can block breathing through one side. Very rarely, a growth near the brain causes headaches with vomiting.
Mention promptly
- A red or painful eye, a squint, or poor vision
- A blocked nose on one side, or repeated nosebleeds
- Morning headaches with vomiting
Neck, and girls growing up
Thyroid lumps are the most common finding and are usually benign. In girls, a rare ovarian tumour can make male-type hormones, and a rare tumour of the cervix can cause bleeding.
Mention promptly
- A lump in the front of the neck
- A deepening voice, new facial hair or missed periods
- Vaginal bleeding before puberty, or a growth there
Not sure whether this applies to you?
Ask an oncologist
!
One thing that cannot wait
If a child with DICER1 suddenly becomes breathless, breathes fast with effort, or complains of sharp chest pain, go to the nearest emergency department the same day. Tell the doctors the child has a DICER1 fault and may have lung cysts. A burst cyst can let air collect around the lung, and that needs to be seen urgently. Do not wait to see whether it settles overnight.
Through the years
How does a child's care change as they grow?
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Soon after birth or diagnosis
If a baby is known to carry the fault, a first chest scan is usually arranged in the early months. This looks for lung cysts while they are still simple and easiest to treat.
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The toddler and early school years
This is when the lung and kidney risks are highest. Regular chest X-rays and tummy ultrasound scans are the core of the plan. Eye checks are often added in these years.
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Later childhood
The lung risk fades. Thyroid ultrasound usually starts, and girls begin pelvic ultrasound alongside their tummy scans. Scans become less frequent for most children.
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The teenage years
Thyroid lumps become more common and are watched rather than rushed into surgery. Girls and parents learn the hormone signs of the ovarian tumour, because that risk continues into early adult life.
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Handing over to adult care
As the child becomes a young adult, they take over their own checks. They should know the result, what it means for their own children, and who to call.
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On your child's reports
The words you will meet, in plain language
- Pleuropulmonary blastoma
- A rare lung tumour of young children. It often starts as cysts and is most treatable when found at that stage.
- Cystic nephroma
- A benign cluster of cysts in the kidney, usually found in young children.
- Multinodular goitre
- A thyroid gland with several lumps. Common in carriers and usually benign.
- Sertoli-Leydig cell tumour
- A rare ovarian tumour that can make male-type hormones, usually in teenage girls or young women.
- Surveillance
- Planned scans and check-ups in a child who is well, to find a growth before it causes symptoms.
- Germline
- Present in every cell from birth, and therefore able to pass to children. This is the kind of fault a DICER1 blood test looks for.
Commonly believed
What parents worry about, and what is true
"We did something wrong in pregnancy to cause this."
Nothing a parent did causes a DICER1 fault. It is either passed down, often from a parent who never knew, or it arose by chance in the child. Food, medicines and prayers in pregnancy play no part.
"Every cough means the lung tumour."
Children cough often, and nearly always for ordinary reasons. What deserves a prompt visit is breathing that is fast or laboured, chest pain, or a cough that keeps returning.
"So many scans will harm my child."
Most checks use ultrasound, which uses no radiation at all. Chest X-rays carry a very small dose. Specialists keep CT scans to a minimum in children for exactly this reason.
"We should keep this from the family to protect her marriage."
Silence does not change the gene. Brothers, sisters and cousins may carry it too, and their young children may need checks. How and when to share it is something a counsellor can help you plan.
Being straight with you
What this page cannot tell you
It cannot tell you your child's personal risk, or the exact scan schedule your child needs. DICER1 is rare, the studies are small, and plans are adjusted for each child's age and history. What your child's specific variant means is a question for the counsellor who ordered the test.
It cannot tell you whether a sign is serious
A list of signs is a prompt to act, not a way to diagnose at home. If something on this page worries you, the right next step is a doctor who knows the result, not another search online.
Who this does not apply to
Most children with a cough, a nosebleed or a thyroid lump do not have DICER1 and do not need this test. This page is for families where the fault has already been found, or where a doctor has raised it because of a typical tumour.
Families from districts can often have scans nearer home and have the results reviewed by the same team.Questions we are asked
Common questions about DICER1 in children
At what age should a child be tested for DICER1?
Because the most serious risk falls in early childhood, testing is usually offered soon after birth when a parent or sibling is known to carry the fault. Waiting until adulthood, as with many adult cancer genes, would miss the years when checks help most.
Does my child need a CT scan?
Sometimes, usually once or twice in early childhood to look closely at the lungs. Most other checks use X-rays or ultrasound. Your child's team will explain why each scan is chosen and will keep the radiation dose as low as they can.
Can my child go to school and play sport normally?
Yes. Children with DICER1 should live normal lives. It helps if a teacher knows that sudden breathlessness or chest pain needs a phone call home, and that the child may miss occasional days for scans.
Should we tell our child about the result?
Yes, in words that fit their age, and more fully as they grow. By the teenage years they need to know the signs to report and why their checks matter. A counsellor can suggest ways to explain it without frightening them.
Our child already had a DICER1 tumour. What about the others?
A child treated for one DICER1 tumour can still develop a different one later. After treatment, the team usually continues checks for the other linked tumours, alongside follow-up for the first one. Ask for both plans in writing.
Do brothers and sisters need testing?
Usually, yes. Parents are often tested first to see whether the fault was inherited. If a parent carries it, each brother or sister has a one in two chance of carrying it too, and testing tells you who needs checks.
Are the scans covered by government schemes?
Treatment for childhood cancer may be covered under Aarogyasri or Ayushman Bharat, depending on eligibility. Routine checks in a well child and the genetic test itself are often not covered. Ask the team to confirm before each step.
Who can explain this to us in Telugu?
Genetic counselling can be arranged in Telugu, and grandparents are welcome to join the conversation. Call the CION helpline, say your child has a DICER1 result, and ask for a counsellor who speaks your language.
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) — 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
Surveillance for DICER1 carriersThe full list of checks, by ageTesting the family for DICER1Which relatives to test, and in what orderDICER1 and thyroid nodules in young peopleWhat happens when a thyroid scan finds a lumpPleuropulmonary blastoma and lung cysts in infancyThe lung tumour parents worry about most
Talk to us
Is your child due for DICER1 checks but you are not sure which?
Tell us your child's age and what has been done so far. We will help you reach a children's cancer and genetics team who can plan the next step. One helpline serves every CION centre.