Medical Oncologist
CION Cancer Clinics
Surveillance for PTEN carriers: what is checked and when | CION Cancer Clinics
A PTEN carrier is usually offered yearly thyroid and skin checks from childhood, breast checks for women from early adult life, and bowel and kidney checks later on. The aim is to find any growth early. This page sets out each check, when it usually starts, and which symptoms mean you should call before the next appointment is due. 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
- What checks does a PTEN carrier need, and how often?
- Which parts of the body are checked, and with what?
- When does each check usually start?
- What the scan looks for, and what to report in between
- What this page cannot tell you
- Four things carriers tell us, and what is actually true
- Common questions about PTEN surveillance
The short answer
What checks does a PTEN carrier need, and how often?
A PTEN carrier is usually offered regular checks of the thyroid, skin, breast, womb, kidney and bowel, starting at different ages for each organ. Most checks happen once a year. The aim is to find a growth early, when treatment is simpler, rather than to prevent every cancer.
Why the schedule is spread across organs
A PTEN fault raises cancer risk in several places at once, and each organ's risk tends to rise at a different age. The thyroid can be affected in childhood. Breast risk climbs from early adult life. Kidney and bowel checks start later. A good schedule follows that pattern rather than doing everything at once.
Where the schedule comes from
The plan on this page follows international guidance, mainly from the NCCN and published expert reviews. Your own schedule may start earlier if a close relative was diagnosed young, or change as new evidence arrives. The team that holds your report sets the final plan.
What surveillance can and cannot do
Regular checks do not lower the chance of a cancer starting. What they change is when it is found. A thyroid or breast cancer picked up on a planned scan is usually smaller and simpler to treat than one found because of symptoms. That is the whole point of turning up every year, even when you feel perfectly well.
Surveillance is a promise to look carefully and often. It is not a promise that nothing will be found.Organ by organ
Which parts of the body are checked, and with what?
Each organ has its own test. Most of them are ordinary scans that any large hospital in Hyderabad can do.
Thyroid
A neck ultrasound once a year, starting in childhood. It is quick, painless and uses no radiation.
Why so early
- Thyroid nodules are very common in PTEN carriers
- Thyroid cancer can occur in young people
Breast
For women, breast examination by a doctor from their mid-twenties, then a yearly breast MRI and mammogram from around their thirties. Men are taught to report any breast lump.
What helps
- Booking the MRI in the same week each year
- Bringing earlier images so they can be compared
- Knowing what your own breasts normally feel like
Womb
Women are taught which symptoms to report, above all unusual bleeding. From their mid-thirties some specialists add an ultrasound or a small sample of the womb lining. There is no single agreed womb test, so reporting symptoms early matters more here than anywhere else.
Kidney, bowel and skin
Kidney imaging every year or two from around forty. A colonoscopy from the mid-thirties, repeated every few years or sooner if polyps are found. A skin check once a year for melanoma.
The colonoscopy gap shortens if polyps keep being found.Not sure whether this applies to you?
Ask an oncologistAcross a lifetime
When does each check usually start?
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At diagnosis, at any age
A full examination, a family tree and, for children, a developmental assessment. This sets the starting point for everything that follows.
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In childhood
A yearly thyroid ultrasound and a yearly skin check begin. Nothing else is usually needed at this age. Parents are shown which lumps and skin changes to mention at the next visit, so the child is not examined more often than necessary.
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In the mid-twenties
Women start regular breast examination by a doctor, and learn what breast changes to report between visits.
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Around the thirties
Yearly breast MRI and mammography begin for women. A first colonoscopy is arranged in the mid-thirties, and womb checks may be added.
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From around forty
Kidney imaging is added, repeated every year or two. By now the full schedule is running, and it continues for life unless your team changes it. Many families find it easier to hold every check in the same month each year.
!
One thing that cannot wait
PTEN carriers can develop a rare growth at the back of the brain. If you or your child has a new, severe headache with vomiting, new unsteadiness when walking, or sudden double vision, go to an emergency department the same day. Tell the doctors about the PTEN fault. Do not wait for the next scheduled check.
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Side by side
What the scan looks for, and what to report in between
Planned check
Report sooner if you notice
Thyroid ultrasound
A neck lump, a hoarse voice, or trouble swallowing
Breast MRI and mammogram
A new lump, skin puckering or nipple changes
Womb checks
Bleeding after menopause or between periods
Colonoscopy and kidney imaging
Blood in the stool or urine, or a lasting change in bowel habit
Skin check
A mole that grows, bleeds or changes colour
Being straight with you
What this page cannot tell you
It cannot set your personal schedule. Start ages move with the family history, with findings on earlier scans, and with any surgery you have already had. A woman who has had preventive breast surgery, for example, no longer needs breast MRI in the same way. Your counsellor and oncologist will write the plan down for you.
It cannot tell you what a finding means
Thyroid nodules and bowel polyps are extremely common in PTEN carriers and most are harmless. Whether a particular finding needs a biopsy or simply another scan is a judgement for the specialist who saw the images. Evidence on the best timing for some checks, especially the womb and kidney, comes from small studies, and experts do not all agree.
Who this does not apply to
This schedule is for people with a confirmed PTEN fault, or a clinical diagnosis of Cowden syndrome. Relatives who tested negative for the family's fault do not need it. They follow the ordinary screening advice for their age, which is a genuine relief for many families.
Commonly believed
Four things carriers tell us, and what is actually true
"My thyroid scan was clear, so I can skip next year."
A clear scan describes today. Nodules can appear at any time, which is why the check repeats every year.
"Men with PTEN only need bowel checks."
Men need thyroid, kidney, bowel and skin checks too. Male breast cancer is also raised, so a breast lump in a man should be reported.
"A mammogram alone is enough for the breast."
For high-risk women, MRI finds cancers a mammogram can miss, especially in dense breast tissue. The two are usually used together.
"Once I am older the checks can stop."
Risk does not switch off with age. The schedule is reviewed over time, and a check may be dropped after surgery on that organ, but most checks continue for life.
Questions we are asked
Common questions about PTEN surveillance
Can all these checks be done on one day?
Often several can. Many families book the thyroid ultrasound, skin check and kidney imaging together once a year, which saves repeat travel from the districts. Breast MRI and colonoscopy may need separate appointments and preparation.
Does breast MRI involve radiation?
No. MRI uses a magnet and radio waves. It usually needs an injection of contrast dye into a vein. That is one reason it is preferred for younger women who will be scanned for many years.
What if a thyroid nodule is found?
Most nodules are harmless. Depending on its size and appearance, the specialist may simply rescan it, or take a small needle sample. Some PTEN carriers eventually choose thyroid surgery because nodules keep coming back.
Is preventive surgery an alternative to scans?
For some women, removing the breasts or the womb is one option among several. It lowers risk but is a major decision. It is covered on its own page, and your team will talk through it alongside continuing surveillance.
Do children really need thyroid scans?
Yes, if they carry the fault. Thyroid cancer is one of the few PTEN-linked cancers that can appear in childhood. The ultrasound is gentle, and most children cope with it well.
Will insurance pay for yearly screening?
It varies. Many policies pay only once a problem is found, not for planned checks in a well person. Ask your insurer in writing, and ask whether Aarogyasri or Ayushman Bharat covers any part of it in your case.
What happens if I miss a year?
Rebook as soon as you can. Missing one round is not a disaster, but gaps add up. Tell the team, so that the next checks can be timed properly rather than bunched together.
Who keeps track of the whole schedule?
Ideally one named doctor. Ask your counsellor to write the full plan on a single sheet, with each check and its due month. Keep a copy with the family. If you need help setting it up, the CION helpline can guide you.
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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Sources
- GeneReviews (NCBI) — PTEN Hamartoma Tumor Syndrome
- NCCN — Genetic/Familial High-Risk Assessment: Breast, Ovarian, Pancreatic, and Prostate
- National Cancer Institute — Genetics of Breast and Gynecologic Cancers (PDQ) – Health Professional Version
- MedlinePlus Genetics — Cowden syndrome
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
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Need help putting a PTEN schedule together?
Tell us what has already been done and who in the family carries the fault. We will help you arrange the checks in a sensible order, close to where you live. One helpline serves every CION centre.