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CION Cancer Clinics
Upper GI endoscopy surveillance for gene carriers | CION Cancer Clinics
Upper GI surveillance is a regular camera check of the food pipe, stomach and duodenum for people who carry certain inherited gene faults. It is offered in FAP, MUTYH polyposis, Lynch syndrome, CDH1 and a few rarer syndromes. This page explains who needs it, what happens on the day, what the report means, and which symptoms after the test cannot wait. At CION Cancer Clinics, our team helps carriers and their families plan checks, next steps and support after a genetic result.
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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
- Who needs regular camera checks of the stomach and duodenum?
- Which inherited conditions call for upper GI checks?
- What happens at a surveillance endoscopy?
- What do the words on an endoscopy report mean?
- What this page cannot tell you
- What do carriers get wrong about upper GI checks?
- Common questions about upper GI surveillance
The short answer
Who needs regular camera checks of the stomach and duodenum?
Upper GI surveillance means looking at your food pipe, stomach and the first part of the small bowel with a thin camera, on a regular schedule, while you are well. It is offered to people who carry certain inherited gene faults that raise the risk of cancer in these organs.
What the check is looking for
The aim is to find polyps, patches of changed lining or very early cancer before they cause any symptoms. A small polyp can often be removed through the same camera. A cancer found early is far easier to treat than one found because of pain, vomiting or weight loss.
Why the plan is built around the gene
Different gene faults put the risk in different places. One fault makes polyps grow around the opening where bile enters the bowel. Another causes a cancer that spreads quietly under the stomach lining, where a camera struggles to see it. So the type of scope, the number of biopsies and how often you return all depend on which gene your family carries.
Surveillance lowers risk by finding things early. It does not stop a cancer from starting.Where it applies
Which inherited conditions call for upper GI checks?
Four groups of families are the usual reason for a referral. Your counsellor will tell you which one, if any, you belong to.
FAP and MUTYH polyposis
Both cause many polyps in the large bowel, and many carriers also grow polyps in the duodenum, the first part of the small bowel. The area around the ampulla needs special attention, so a side-viewing scope is often used as well as the usual one.
Usually checked for
- Polyps in the duodenum
- Changes around the ampulla
- Polyps in the stomach
Lynch syndrome
The risk of stomach and small bowel cancer is raised, more with some Lynch genes than others. Many guidelines advise a one-time test for H. pylori, a common stomach infection, and treating it if it is found. Whether regular scopes follow depends on the gene and on whether relatives had stomach cancer.
CDH1 and hereditary diffuse gastric cancer
Removing the stomach is usually recommended for carriers, because this cancer is so hard to see. People who are not ready for that are offered yearly scopes in an expert unit, with many small biopsies taken from across the stomach.
A normal-looking stomach does not rule this cancer out.Peutz-Jeghers and juvenile polyposis
Polyps can grow anywhere from the stomach to the end of the bowel. Checks often start in childhood, and the upper scope is paired with a capsule camera or an MRI of the small bowel. People with the SMAD4 form of juvenile polyposis tend to grow more polyps in the stomach.
Not sure whether this applies to you?
Ask an oncologistOn the day
What happens at a surveillance endoscopy?
Before you come
You will be asked not to eat for about six hours beforehand. Bring your genetic report and your last endoscopy report. If you take blood thinners or diabetes medicine, ask in advance what to do with them.
Numbing or sedation
A throat spray numbs the back of your mouth. Many people also choose light sedation. If you are sedated, someone must take you home, and you should not drive for the rest of the day.
The camera itself
A thin, flexible tube passes through the mouth into the stomach and duodenum. It is uncomfortable rather than painful, and it does not block your breathing. A surveillance scope takes longer than a routine one, because every area is looked at slowly.
Biopsies and polyps
Small samples are taken with tiny forceps. You do not feel this. Small polyps can often be removed there and then. Larger ones may need a second, planned procedure.
The report
You leave with a written report of what was seen. Biopsy results follow later, and the team will tell you how you will hear. The report should say when the next check is due.
On your report
What do the words on an endoscopy report mean?
- Gastroscopy or OGD
- The standard camera test of the food pipe, stomach and duodenum. The letters OGD stand for the three organs the camera passes through.
- Duodenum
- The first part of the small bowel, just after the stomach. It is a common place for polyps to grow in FAP.
- Ampulla
- The small opening in the duodenum where bile and pancreatic juice drain in. It sits on the side wall, so a side-viewing scope sees it best.
- Adenoma
- A polyp made of cells that could, over many years, turn into cancer. Finding and removing adenomas is the whole point of the check.
- Mapping biopsies
- Many small samples taken from normal-looking stomach lining. They are used in CDH1 carriers because early cancer may not show on the surface.
- Spigelman stage
- A score for how many duodenal polyps there are in FAP, and how large and changed they look. A higher stage means closer checks or a talk about surgery.
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After the test: what cannot wait
Mild bloating and a sore throat are normal for a day. Go to the nearest emergency department the same day if, after an endoscopy, you vomit blood or dark material that looks like coffee grounds, pass black sticky stools, have severe pain in the chest or tummy, or develop a fever with pain. These can mean bleeding or a small tear, especially after a polyp has been removed. Tell the doctor you have just had an endoscopy.
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Being straight with you
What this page cannot tell you
It cannot tell you whether you need upper GI checks, or how often. That depends on the exact gene, the family history, your age and what earlier scopes have found. Guidelines also differ between countries and change as evidence grows. Your schedule should come from the genetics team and the gastroenterologist who know your case.
It cannot read your report for you
A line such as "few small adenomas" can mean very little, or it can change your plan, depending on the gene behind it. What your specific result means is a question for the counsellor who ordered the test and the doctor who did the scope.
Who this does not apply to
Most people with indigestion, acidity or one older relative with stomach cancer do not need genetic surveillance. They need an ordinary check of their symptoms. If you have no confirmed gene fault and no strong family pattern, this page is not about you. Where the evidence is thin, as it is for small bowel checks in Lynch syndrome, your team should say so plainly.
If you travel from a district, ask whether biopsies can be taken at the same scope and the report shared, so you do not make the trip twice.Commonly believed
What do carriers get wrong about upper GI checks?
"My last scope was clear, so I can stop."
A clear scope tells you about that day. New polyps in FAP, and new changes in the stomach, can appear between checks. That is why the schedule carries on unless your team changes it.
"Acidity tablets will protect my stomach."
Acid-reducing tablets ease symptoms. They do not lower an inherited cancer risk, and they can hide symptoms that should be checked. Take them only as your doctor advises.
"An endoscopy at any clinic is the same."
A routine scope is quick. A surveillance scope for a gene fault is slower, may need a side-viewing instrument or many biopsies, and is best done by a team that sees such patients often.
"If I feel well, nothing can be wrong."
Early polyps and early cancers in the stomach and duodenum rarely cause symptoms. Feeling well is the reason you are being checked, not a reason to skip it.
Questions we are asked
Common questions about upper GI surveillance
Is an upper GI endoscopy painful?
Most people describe it as uncomfortable rather than painful. The throat spray takes away the gagging for most, and light sedation makes many people drowsy enough to remember little of it. The biopsies themselves cannot be felt. A sore throat for the rest of the day is common and settles on its own.
How often will I need a scope?
It depends on the gene and on what earlier scopes found. In FAP, the duodenal polyp score sets the gap between checks. In CDH1 carriers who keep their stomach, checks are usually yearly. In Lynch syndrome, practice varies between guidelines. Your report should state when the next scope is due.
Can I have the scope without sedation?
Yes. Many people manage with the throat spray alone and can go home or back to work straight away. Longer surveillance scopes with many biopsies are often easier with sedation. Talk it through with the team beforehand, especially if you are travelling alone from a district.
Should I be tested for H. pylori?
If you carry a Lynch or CDH1 fault, guidelines commonly advise it. H. pylori is a stomach infection that is very common in India and raises stomach cancer risk. It can be found with a breath, stool or biopsy test, and treated with a course of medicines. A repeat test confirms it has gone.
Do children need upper GI checks?
For most syndromes, upper GI checks start in adult life. Peutz-Jeghers syndrome and juvenile polyposis are the main exceptions, because polyps can cause problems in childhood. Your counsellor will explain when checks should begin for your child and what they involve.
Can the camera see a CDH1 stomach cancer?
Not reliably. This cancer spreads in scattered cells under a lining that can look completely normal. That is why the scope takes many random biopsies, and why removing the stomach is usually advised. Surveillance is a way to watch while you decide, not a full substitute.
Does the scope check my pancreas too?
No. A standard scope sees only the inside lining of the food pipe, stomach and duodenum. Pancreatic surveillance, where it is offered, uses an MRI or a special ultrasound scope. It is a separate decision, made on the gene and the family history.
Where should I have my surveillance scopes?
Ideally with a gastroenterology team that knows your gene and keeps your earlier reports. Continuity matters more than the nearest clinic. If you are not sure where to start, call the CION helpline 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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Sources
- NHS — Gastroscopy
- GeneReviews (NCBI Bookshelf) — APC-Associated Polyposis Conditions
- GeneReviews (NCBI Bookshelf) — Hereditary Diffuse Gastric Cancer
- GeneReviews (NCBI Bookshelf) — 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
Colonoscopy intervals by syndromeThe bowel half of the same scheduleUpper GI surveillance in FAPDuodenal polyps and the ampulla in detailSurveillance endoscopy in hereditary diffuse gastric cancerWhy CDH1 scopes take so many biopsiesGastric and small bowel surveillance in LynchWhat Lynch carriers are offered, and where evidence is thin
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Not sure whether your gene fault needs stomach checks?
Tell us which gene was found and what your last scope showed. We will help you work out whether upper GI surveillance applies to you and where to have it. One helpline serves every CION centre.