Medical Oncologist
CION Cancer Clinics
Cowden syndrome surveillance across the breast, thyroid, kidney and bowel | CION Cancer Clinics
People with Cowden syndrome are offered lifelong checks of the breast, thyroid, womb, kidneys and bowel, because the PTEN fault raises cancer risk in each of them. The checks start at different ages, some in childhood. This page explains what each check involves, when it usually begins, which symptoms to report between visits, and why your own plan may differ from the typical one. At CION Cancer Clinics, our oncologists plan screening and care for families with an inherited cancer syndrome, explained in plain words.
NG
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
Which checks does a person with Cowden syndrome need?
People with Cowden syndrome are offered regular checks of the breast, thyroid, womb, kidneys and bowel, because those are the organs where the PTEN fault raises cancer risk. The checks start at different ages and run for life. Their purpose is to find a problem while it is small and easier to treat.
Why so many organs at once
PTEN acts as a brake on cell growth in almost every tissue. When one copy is faulty from birth, several organs carry a raised risk at the same time. That is why the plan looks long. Each item on it exists because a cancer in that organ is more common in Cowden than in the general population, and an early finding changes what can be done.
What surveillance is not
Surveillance does not stop a cancer from forming. It is a way of catching one early. For some organs, such as the breast and womb, preventive surgery is also discussed as one option among several. That choice is personal and is covered on its own page, not here.
The plan belongs to the person, not the gene. Your specialist adjusts it for your age, sex and family history.Organ by organ
What is checked in each organ, and how?
These are the usual tools. Your specialist will choose which ones apply to you and how often.
Breast
Women with Cowden have a clearly raised breast cancer risk. Checks combine an examination by a doctor with yearly imaging from early adulthood, usually an MRI alongside a mammogram. Women are also taught what their own breasts normally feel like.
Thyroid
An ultrasound scan of the neck looks for lumps in the thyroid gland. This is often the first check to start, sometimes in childhood, because thyroid problems can appear young in PTEN carriers.
Tell your doctor about
- A new lump in the front of the neck
- A hoarse voice that does not settle
- Trouble swallowing
Kidney
Kidney cancer is more common in Cowden than usual, though still uncommon. Ultrasound or MRI of the kidneys is added from middle adulthood. Blood in the urine should always be reported.
Bowel
Many people with Cowden grow bowel polyps. Most are harmless hamartomas, but bowel cancer risk is also raised. A colonoscopy, a camera test of the large bowel, looks for and removes polyps.
Not sure whether this applies to you?
Ask an oncologistAcross a lifetime
When does each check usually start?
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At diagnosis, even in childhood
A thyroid ultrasound is usually arranged soon after the diagnosis and repeated regularly. Children also have their development and skin reviewed by their paediatric team.
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From early adulthood
A yearly full examination by a doctor who knows the syndrome begins, covering the skin, neck and breasts. Women are taught breast awareness and the warning signs of womb cancer.
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Around thirty
Yearly breast imaging usually begins for women. It may start earlier if a close relative had breast cancer young, which is why your family history matters here.
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From the mid-thirties
A first colonoscopy is usually offered, with the next one timed by what it finds. Women discuss checks of the womb lining and the options for reducing womb cancer risk.
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Around forty
Kidney imaging is added. By now the plan covers every organ, and a good team books several tests on one visit to save repeated trips from the district.
On your plan
The words you will meet, in plain language
- Surveillance
- Regular planned checks in a person who is well, to find a problem early. It is sometimes called screening.
- Breast MRI
- A scan using a magnet rather than X-rays. It sees dense young breast tissue better than a mammogram does.
- Thyroid nodule
- A lump in the thyroid gland. Most are harmless, and many people with Cowden have several.
- Colonoscopy
- A thin camera passed through the back passage to look at the large bowel, usually under sedation.
- Hamartomatous polyp
- A growth of disorganised but normal tissue in the bowel. It is common in Cowden and is not a cancer.
- Womb lining sample
- A small piece of the inner lining of the womb, taken in clinic and checked under a microscope.
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One thing that cannot wait
A small number of people with Cowden develop a slow-growing lump in the back of the brain that can block the flow of fluid. If a person with a PTEN fault has a new severe headache with vomiting, double vision or sudden trouble walking steadily, go to the nearest emergency department the same day. Tell the doctors about the Cowden diagnosis. Do not wait for the next routine check.
Being straight with you
What this page cannot tell you
It cannot give you your own schedule. The ages above are typical starting points from guidelines, and your specialist will move them for your family. A mother diagnosed young, a previous thyroid operation or a polyp found early all change the timing.
Guidelines do not fully agree
American and European experts differ on how often the kidneys and bowel should be checked. The evidence comes from fairly small groups of patients, so honest uncertainty is part of the picture. Ask your doctor which guideline your plan follows and why.
Who this does not apply to
This plan is for people with a confirmed PTEN fault, or a clear clinical diagnosis of Cowden. A single thyroid nodule, a few skin tags or one bowel polyp does not put you on it. If your PTEN result is a variant of uncertain significance, what your specific variant means is a question for the counsellor who ordered the test.
The practical side
Yearly MRI and ultrasound add up over a lifetime. Before assuming any insurer or government scheme will pay for checks in a well person, ask them directly. Your counsellor can help you plan a schedule you can actually keep up.
Commonly believed
Four things families tell us, and what is actually true
"My last scans were clear, so I can skip this year."
A clear scan describes one day. The risk does not fall with time, and cancers in PTEN carriers can appear between checks. The plan only works if it keeps running.
"Men with Cowden do not need checks."
Men need thyroid, kidney, bowel and skin checks just as women do. Only the breast and womb items are for women, and men should still report any lump in the chest.
"Having so many thyroid lumps means I have cancer."
Most thyroid nodules in Cowden are harmless. The ultrasound is looking for the one that behaves differently, which may then be sampled with a fine needle.
"A mammogram every year is enough for a young woman."
Young breast tissue is dense, and a mammogram alone can miss small cancers in it. That is why MRI is usually added for women at this level of risk.
Questions we are asked
Common questions about Cowden surveillance
How often will I need to come in?
Most items on the plan are yearly, and the colonoscopy is spaced further apart if it stays clear. A well-organised team groups your tests so you travel as few times as possible. Your specialist will give you a written calendar for the year ahead.
Does my child need checks too?
If your child carries the PTEN fault, a thyroid ultrasound usually starts in childhood, along with a review of development and skin. Breast, bowel and kidney checks wait until adult life. Your paediatrician and counsellor will plan this together.
Is the breast MRI safe to repeat every year?
MRI uses a magnet and radio waves, not X-rays, so it carries no radiation. A dye is usually injected during the scan. Tell the team if you have kidney problems, metal implants or a fear of closed spaces before you book.
What happens if a thyroid lump is found?
Most lumps are simply measured and watched. If one looks unusual on the scan, a fine needle sample is taken to see what the cells are. Only a small number of lumps need surgery, and your surgeon will explain the reasons.
What symptoms should I report between checks?
A new breast or neck lump, blood in the urine or stool, bleeding after menopause or between periods, and a mole or skin spot that changes. Report these to your doctor promptly rather than waiting for the next booked scan.
Can I have these checks outside Hyderabad?
Ultrasound is widely available in district towns. Breast MRI and colonoscopy need a centre with the right equipment and experience. Keep every report in one folder so whoever does the next check can compare it with the last.
Does preventive surgery replace the checks?
It can replace checks for the organ that is removed, but not for the others. Someone who chooses breast surgery still needs thyroid, bowel and kidney checks. It is one option among several, and the decision is yours.
Who coordinates all of this?
Ideally one oncologist or genetics clinic holds the whole plan and refers you to each specialist. Without that, tests get missed. Call the CION helpline if you need help setting up a coordinated plan.
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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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
- 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.
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Need help putting a Cowden check plan together?
We can review your reports and family history and help you build one coordinated schedule of checks. Counselling is available in Telugu. One helpline serves every CION centre.