Medical Oncologist
CION Cancer Clinics
Endoscopy at diagnosis: why doctors check for varices | CION Cancer Clinics
If you have liver cancer and cirrhosis, your doctor may ask for an endoscopy before treatment starts. It is not looking for the cancer. It checks for varices, swollen veins in the food pipe that can bleed suddenly. This page explains why the test matters, what happens on the day, what the report means, and who does not need it. At CION Cancer Clinics, our team goes through your scan, blood test and biopsy reports with you and plans the next step.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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On this page
- Why would I need an endoscopy if the cancer is in my liver?
- How can a camera test change my cancer treatment?
- What actually happens during the endoscopy?
- What do the words on an endoscopy report mean?
- Four things families worry about, and what is actually true
- What this page cannot tell you
- Common questions about endoscopy and varices
The short answer
Why would I need an endoscopy if the cancer is in my liver?
An endoscopy at diagnosis is not looking for the cancer. It is looking for varices, which are swollen veins in the food pipe (oesophagus) and stomach. They form when scarring in the liver pushes blood back into smaller veins that were never built to carry it.
Most people with liver cancer also have cirrhosis, which means a scarred liver. Cirrhosis raises the pressure in the portal vein, the large vein that carries blood from the gut into the liver. Doctors call this portal hypertension. Varices are its most important sign, because they can burst and bleed without any warning.
The cancer itself is diagnosed another way
Liver cancer is usually confirmed on a contrast CT or MRI scan, and often without a biopsy. Our page on diagnosis without a biopsy explains why. The endoscopy answers a separate question: how much pressure is the liver under, and is there a vein that could bleed while treatment is going on?
An endoscopy is a check on the liver's plumbing. It tells you nothing about the tumour's size or stage.What it changes
How can a camera test change my cancer treatment?
The result feeds straight into the plan the tumour board makes. It matters in four ways.
It prevents a first bleed
If large varices are found, a doctor can tie them off with small rubber bands during the same test, or start a tablet that lowers the pressure. Treating a vein before it bleeds is far safer than treating it after.
It decides which medicines are safe
Some liver cancer treatments, such as bevacizumab, raise the risk of bleeding. Untreated large varices usually have to be dealt with first. Our page on why endoscopy comes first covers this.
It shows how stressed the liver is
Varices tell the team that portal hypertension is significant. That affects whether surgery to remove part of the liver is sensible, and how the team weighs one treatment against another.
It sets a baseline
Treatment and the cancer itself can change the pressure over time. A first look gives the team something to compare against later.
Often found at the same time
- Varices in the stomach as well as the food pipe
- Irritated stomach lining from high pressure
- Ordinary ulcers or inflammation
Not sure whether this applies to you?
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!
Go to hospital today, not tomorrow
If you vomit blood or anything that looks like coffee grounds, pass black, sticky stools, or suddenly feel faint and dizzy, go to the nearest emergency department straight away. Say that you have liver disease and may have varices. Do not wait for your endoscopy date, and do not wait to see whether it settles. A bleeding vein can lose a lot of blood quickly.
On the day
What actually happens during the endoscopy?
Before you go
You will be told how long to stop eating and drinking beforehand. Tell the team about every medicine you take, especially blood thinners, and about any herbal tonic. CION arranges the test with a partner gastroenterologist.
Numbing or sedation
Your throat is sprayed to numb it, and many people are also given a light sedative through a vein. You keep breathing on your own and usually remember little of it.
The camera
A thin, flexible tube with a light passes through the mouth into the food pipe, stomach and the first part of the gut. The doctor looks for swollen veins and notes their size and any warning marks on them.
Banding, if needed
If a large vein is found, it can often be tied off then and there. You may feel some chest discomfort and find swallowing sore for a short while afterwards. Someone should take you home if you had sedation.
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On your report
What do the words on an endoscopy report mean?
- No varices
- No swollen veins were seen. The test may be repeated later, because the pressure can rise over time.
- Small varices
- Swollen veins are present but slim. They are usually watched, and sometimes a tablet is started.
- Large varices
- Bigger veins with a higher chance of bleeding. These are usually banded or treated with tablets before any cancer treatment that raises bleeding risk.
- Red signs
- Red marks on the surface of a vein. They suggest a thin wall and a higher chance of bleeding, whatever the size.
- Portal hypertensive gastropathy
- A stomach lining that looks irritated and patchy because of the high pressure. It can cause slow bleeding and a low blood count.
- Band ligation
- Tying off a swollen vein with a tiny rubber band so it shrinks and closes. It often needs repeating over several visits.
Commonly believed
Four things families worry about, and what is actually true
"He has never bled, so he cannot have varices."
Varices cause no symptoms at all until they bleed. That is the whole reason for checking. Many people learn they have them only from this test.
"The endoscopy will spread the cancer."
The camera goes nowhere near the liver. It looks only at the inside of the food pipe and stomach, and it cannot move cancer cells anywhere.
"Varices mean the cancer has spread to the food pipe."
They are a sign of pressure from a scarred liver. They are not cancer, and they are common in cirrhosis whether or not a tumour is present.
"It is an extra test that only delays treatment."
It is quick, and it often runs alongside other tests. Finding a vein before a bleeding-risk medicine starts can prevent an emergency that would delay treatment far longer.
Being straight with you
What this page cannot tell you
It cannot tell you whether you personally need an endoscopy now. That depends on whether you have cirrhosis, what your blood tests and scans show, and which treatment is being planned. Your oncologist and a hepatologist decide that together.
Who this does not apply to
If your liver is not scarred, for example when cancer has spread to a healthy liver from the bowel or another organ, varices are much less likely and an endoscopy is often not needed. Some people with mild cirrhosis and good blood counts may be safely watched instead, using blood tests and a liver stiffness scan. Our page on who needs an endoscopy explains how doctors decide.
It cannot read your report for you
Grading words differ between doctors and hospitals. Bring the report, and any photographs taken, to your next appointment so the team can explain what it means for your plan.
If you are unsure whether you were meant to have this test, call the helpline. Someone will check your plan and tell you.Questions we are asked
Common questions about endoscopy and varices
Is the endoscopy painful?
Most people find it uncomfortable rather than painful. The throat spray stops gagging, and a light sedative helps you relax. If bands are placed, the chest and throat may feel sore for a short time. Tell the team if pain is severe or keeps getting worse.
Does everyone with liver cancer need one?
No. It is mainly for people who have cirrhosis or signs of high pressure in the portal vein. Someone whose liver is otherwise healthy may not need it. Your team decides from your blood tests, scans and the treatment being planned.
Will it delay my cancer treatment?
Usually only slightly, and often not at all, because it can be done while other tests are pending. If large varices need banding, a medicine with bleeding risk may wait until the veins are under control. That short wait is meant to keep you safe.
What happens if varices are found?
Small ones are often watched. Larger ones are usually banded or treated with a tablet that lowers the pressure, such as a beta-blocker. Our page on beta-blockers to prevent bleeding explains how those tablets work.
Can a scan replace the endoscopy?
Not fully. A CT scan can sometimes show large varices, and a liver stiffness scan with blood counts can help decide who needs a look. Only the camera shows the size and the warning marks on a vein clearly enough to decide on banding.
Does CION do the endoscopy?
CION arranges it through partner hospitals and gastroenterologists, and the result comes back to your oncologist and the tumour board. Your team will tell you where the test takes place and what to bring with you on the day.
Will I need it again?
Often, yes. Banding usually takes several visits to close the veins, and people without varices may be checked again later because pressure can rise. How often depends on your liver and your treatment. Ask your team when the next one is due.
What should I do if I bleed before the test?
Go to the nearest emergency department today. Vomiting blood, black stools or sudden faintness cannot wait for a planned appointment. Our page on what happens in hospital during a bleed explains what to expect when you get there.
Your Specialists
Meet CION's liver cancer specialists. Bring your scan reports and liver blood tests.
Our medical and surgical oncologists plan liver cancer care together, weighing the tumour and how well your liver works before choosing surgery, a liver-directed procedure or medicines.
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
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- Cleveland Clinic — Esophageal Varices: Symptoms, Causes & Treatment
- MedlinePlus — Bleeding esophageal varices
- Merck Manual Consumer Version — Portal Hypertension
- NIDDK — Treatment for Cirrhosis - NIDDK
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
Who needs an endoscopy to check for varicesHow doctors decide whether the test is needed at allVarices explainedWhat these swollen veins are and why they formWhy you need an endoscopy before bevacizumabThe treatment decision this test most often changesGrades of varicesWhat small, large and red signs mean on your report
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Not sure whether you need an endoscopy first?
Tell us about your scans and blood tests and we will explain where an endoscopy fits in your plan, and arrange it if it is needed. One helpline serves every CION centre.