Medical Oncologist
CION Cancer Clinics
Surveillance for PMS2 carriers: what is checked and when | CION Cancer Clinics
If you carry a PMS2 fault, the heart of your plan is a regular colonoscopy, usually starting in your thirties. Women also learn which bleeding to report and later discuss whether to remove the womb. This page sets out each check, when it begins, which symptoms should not wait, and why PMS2 carriers need fewer checks than other Lynch carriers. 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 PMS2 carrier actually need?
- Which checks are in a PMS2 surveillance plan?
- When does each check begin?
- What do the terms in your plan mean?
- Which symptoms should not wait for your next check?
- What this page cannot tell you
- Four things people believe about PMS2 checks
- Common questions about PMS2 surveillance
The short answer
What checks does a PMS2 carrier actually need?
The main check is a regular colonoscopy, usually starting in your thirties. Women also learn which bleeding to report, and later discuss whether to have the womb removed. Most other Lynch syndrome checks are not routine for PMS2.
Why the schedule is lighter than for other Lynch genes
PMS2 carries the lowest cancer risks of the Lynch genes, and its cancers tend to appear later. So colonoscopy often starts later and the gaps between checks can be longer. Lighter does not mean optional.
Why colonoscopy matters so much
Bowel cancer in Lynch syndrome usually starts as a small growth called a polyp. A colonoscopy can find a polyp and remove it in the same visit, before it has a chance to become cancer. No other check in this schedule does that much good.
Your family history can change the plan
If a relative developed bowel cancer unusually young, your team may start checks earlier. If a relative had stomach or urinary tract cancer, extra checks may be added. Tell your counsellor about every cancer in the family, on both sides.
The checks, one by one
Which checks are in a PMS2 surveillance plan?
Not every check suits every carrier. This is the usual shape of the plan, which your team adjusts to your family.
Colonoscopy
A camera looks along the whole large bowel, usually under sedation. It is the centre of the plan for men and women alike.
Usually
- Starts in your thirties
- Repeats at a gap your team sets
- Continues well into later life
Womb awareness
No scan reliably picks up early womb cancer. Instead, women learn the warning signs and report them promptly. Unusual bleeding usually appears early, while the cancer is still treatable.
A conversation about surgery
Some women choose to have the womb removed once their family is complete. For PMS2 the case is weaker than with other Lynch genes, so this is a discussion rather than a default.
Checks added only with family history
Stomach and urinary tract checks are not routine for PMS2. They may be added if a close relative had one of those cancers. Some teams also suggest a one-off test for the stomach infection H. pylori.
Not sure whether this applies to you?
Ask an oncologistAcross a lifetime
When does each check begin?
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Soon after the result
You meet a counsellor or oncologist who writes down your plan. Ask for it on paper. Keep a copy with your other medical records and share it with any new doctor.
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In your twenties
Bowel checks do not usually start yet for PMS2. This is a time to learn the warning signs and keep a healthy weight. Women can read up on the womb risk before planning a family.
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In your thirties
Your first colonoscopy is booked, often earlier if a relative had bowel cancer young. Any polyps are removed and sent to the laboratory. The findings help set your next date.
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Once your family is complete
Women discuss whether to have the womb removed, usually around the menopause. Some choose surgery and some choose to watch for symptoms. Both are reasonable choices.
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Later life
Colonoscopy continues at the gap your team sets. It stops only when your doctor judges that the test no longer helps, taking your health into account.
Words you will hear
What do the terms in your plan mean?
- Surveillance
- Regular checks for people at raised risk who are well. The aim is to find anything early, or prevent it.
- Colonoscopy
- A thin camera passed into the large bowel. Polyps can be removed through it during the same visit.
- Polyp
- A small growth on the bowel lining. Most are harmless, but some can slowly turn into cancer if left alone.
- Bowel preparation
- The laxative drink taken before a colonoscopy to empty the bowel. A clean bowel lets the doctor see small polyps.
- Hysterectomy
- An operation to remove the womb. It is one option for lowering womb cancer risk, discussed once childbearing is over.
- H. pylori
- A common stomach infection that raises stomach cancer risk. It is found with a simple test and treated with medicine.
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Between checks
Which symptoms should not wait for your next check?
If you notice
What to do
Blood in your stool, or black stools
See your doctor promptly and mention Lynch syndrome
A change in bowel habit that does not settle
Ask whether your colonoscopy should come forward
Any bleeding after the menopause
See a gynaecologist without delay
Tiredness with a low haemoglobin on a blood test
Ask whether bleeding from the bowel has been ruled out
Being straight with you
What this page cannot tell you
It cannot give you your own start age or gap between checks. Guidelines differ between countries, and your family history can move both. Your plan should come from your counsellor or oncologist and be written down for you.
It cannot promise that checks will catch everything
Colonoscopy lowers the chance of dying from bowel cancer, but no check finds every growth. Report symptoms between checks rather than waiting for the next date.
Who this does not apply to
This plan is for people with a confirmed PMS2 fault in a blood test. If your result is a variant of uncertain significance, it does not apply. Relatives who tested negative for the family fault need only routine screening.
Travelling from a district for every colonoscopy is hard. Ask whether it can be done at a centre nearer home, with your report sent on.Commonly believed
Four things people believe about PMS2 checks
"I feel fine, so I can skip this year's colonoscopy."
Polyps cause no symptoms. The whole point of the check is to find them before you feel anything, while they can still be removed simply.
"A blood test or stool test can replace colonoscopy."
Not for Lynch syndrome carriers. Home stool tests are built for the general population and can miss polyps. Colonoscopy remains the check that counts.
"An ultrasound every year will catch womb cancer."
Scans have not been shown to find womb cancer early enough to help. Knowing the warning signs, and acting on them, is more useful.
"My last colonoscopy was clear, so I am done."
A clear result is good news for now. The risk stays with you, so checks continue at the gap your team has set.
Questions we are asked
Common questions about PMS2 surveillance
How often will I need a colonoscopy?
Less often than carriers of other Lynch genes, but regularly and for many years. The exact gap depends on the guideline your team follows and on what each colonoscopy finds. Ask for your next date to be written into your plan.
Is colonoscopy painful?
Most people are given sedation and remember little. The bowel preparation the day before is often the hardest part. You will need someone to take you home afterwards, so plan that if you are travelling from a district.
Do men with PMS2 need any checks?
Yes. Men share the raised bowel risk and need colonoscopy on the same plan as women. They do not need the womb checks, and there is no routine extra check for other organs unless the family history calls for it.
Should I have my ovaries removed too?
Not routinely. The evidence for a raised ovarian risk with PMS2 is unclear. Removal may be discussed alongside womb surgery, especially if ovarian cancer has appeared in the family. It is your choice, made with your gynaecologist.
Can aspirin lower my risk?
A large study in Lynch syndrome found that regular aspirin lowered bowel cancer risk. It does not suit everyone, because it can cause bleeding. Do not start it on your own. Ask your oncologist whether it is right for you.
Does insurance or Aarogyasri cover surveillance?
Cover for checks in people who are well varies a great deal between schemes and policies. Ask the insurer or scheme directly, with your plan in hand. The CION team can tell you what a colonoscopy is likely to cost before you book.
What if a polyp is found?
It is usually removed during the same colonoscopy and sent to the laboratory. Most polyps are not cancer. Finding one may bring your next check forward, and that is the plan working as it should.
I missed a colonoscopy. What now?
Book the next one as soon as you can. One late check is not a disaster, but try not to let the gap stretch further. Setting a reminder on your phone for the next date helps.
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) — Lynch Syndrome
- National Cancer Institute — Genetics of Colorectal Cancer (PDQ)
- NCCN — NCCN Guidelines: Detection, Prevention and Risk Reduction
- MedlinePlus Genetics — Lynch 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
PMS2 mutation: which cancers and what riskThe risks your checks are designed to catchWhy colonoscopy is so frequent in LynchWhy the gaps are shorter than normal screeningAspirin for Lynch syndromeWhat the evidence shows, and who it suitsPMS2 positive: what happens nextThe first weeks after a positive result
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Need a surveillance plan you can actually follow?
Bring your PMS2 report and your family history, and we will help you set out a written schedule of checks. One helpline serves every CION centre.