Medical Oncologist
CION Cancer Clinics
Removing an early cancer without an operation | CION Cancer Clinics
Some very early cancers of the food pipe, stomach and bowel can be removed through a flexible scope, with no cut on the skin and the organ left in place. It is only possible while the cancer is still confined to the inner lining. This page explains how it works, who it does not suit, and why the laboratory report afterwards decides what happens next. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
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Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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On this page
- Can an early cancer really be removed without an operation?
- What are polypectomy, EMR and ESD?
- What happens when you come in for the procedure?
- How is it different from having an operation?
- Is a scope procedure a lesser treatment than surgery?
- Who is it not suitable for, and what can this page not tell you?
- Common questions about endoscopic resection
The short answer
Can an early cancer really be removed without an operation?
Sometimes, yes. When a cancer in the food pipe, stomach or bowel is found very early and is still confined to the inner lining, it can often be lifted out through a flexible tube passed through the mouth or the back passage. There is no cut on the skin, and the organ stays in place.
What the procedure is called
The umbrella term is endoscopic resection, which simply means removal through a scope. Depending on the size and shape of the growth, your report may name it polypectomy, EMR or ESD. All three work from inside the gut, using a camera and small instruments passed down the scope.
Why early is the whole point
The inner lining of the gut has very few lymph glands and vessels. A cancer that has not grown past that lining is unlikely to have spread, so removing the growth itself may be enough. Once a cancer grows deeper into the wall, the chance of spread to nearby glands rises. A scope cannot remove glands, and an operation becomes the usual advice.
What the team must be sure of first
Before offering it, the team looks closely at the growth, often with dye sprays, magnified views or an ultrasound scope. They are judging how deep it goes. That judgement is careful but not perfect, which is why the removed piece is always sent to the laboratory.
Whether it suits you is decided by your treating team, after looking at your own scope pictures and biopsy.The techniques
What are polypectomy, EMR and ESD?
They are three ways of doing the same job. The team picks one based on the size, shape and position of the growth.
Polypectomy
A thin wire loop is slipped over a growth that sticks out on a stalk, like a small mushroom, and tightened to cut it free. It is the simplest of the three and is often done during a routine colonoscopy.
Usually used for
- Polyps with a stalk
- Small flat polyps in the bowel
EMR (endoscopic mucosal resection)
Fluid is injected under a flat growth to lift it off the deeper wall, like a blister. The raised area is then caught in a loop or a suction cap and removed, sometimes in more than one piece.
Usually used for
- Flat growths of modest size
- Raised areas in Barrett's oesophagus
ESD (endoscopic submucosal dissection)
The endoscopist marks around the growth, lifts it, then cuts slowly underneath with a fine electric knife so it comes away as one whole piece. It takes longer and needs more specialised skill.
One whole piece lets the laboratory check every edge properly.Not sure whether this applies to you?
Ask an oncologistOn the day
What happens when you come in for the procedure?
Preparing
You will be asked not to eat for some hours beforehand. For the bowel, you drink a clearing solution the day before. Tell the team about every medicine you take, especially blood thinners such as aspirin or clopidogrel. Your doctors will tell you what to do with them. Do not stop them on your own.
Sedation
Most people have sedation through a vein, so they are drowsy and comfortable. Longer ESD procedures are often done under a general anaesthetic. An anaesthetist will check you over first.
The removal
The scope is passed through the mouth or back passage. Nothing is cut on the outside. The time it takes varies a great deal, from well under an hour to several hours for a large ESD.
Afterwards
You are watched while the sedation wears off. Some people go home the same day. After a larger removal you may stay in hospital for a night or two, starting with fluids before soft food.
!
One thing that cannot wait
Bleeding or a small tear in the gut wall can show up days after the procedure, once you are home. If you vomit blood, pass black or bloody stools, feel faint, or have severe pain in the chest or belly with a fever, go to the nearest emergency department the same day. Say you have had an endoscopic resection and take the discharge papers with you. Do not wait for the follow-up appointment.
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Side by side
How is it different from having an operation?
Endoscopic resection
Operation
Done through a scope, with no cut on the skin
Done through cuts in the belly or chest, open or keyhole
The organ stays in place and works as before
Part or all of the organ is removed
Removes only the growth, not the lymph glands
Removes the growth with the glands that drain it
Usually a short hospital stay, or none
Usually a longer stay and a slower recovery
Needs regular follow-up scopes for years
Follow-up depends on the final report
Commonly believed
Is a scope procedure a lesser treatment than surgery?
"Without an operation, some of the cancer must be left behind."
For a truly early cancer, the growth is the disease. The removed piece goes to the laboratory, and the report says whether the edges are clear. If they are not, or the cancer went deeper than expected, your team will tell you and discuss what comes next.
"It is only a biopsy, so the real treatment is still to come."
A biopsy takes a tiny sample. An endoscopic resection removes the whole growth with a rim of normal tissue. For some people that is the complete treatment, followed by regular check scopes.
"If it is so simple, any endoscopy unit can do it."
A simple polypectomy is routine. A large EMR or an ESD needs an endoscopist with specific training and a team ready to manage bleeding or a tear. Ask how often the unit does your procedure.
"No cut means there is no risk."
Bleeding, a tear in the wall and later narrowing can all happen. They are usually managed through the scope, but sometimes need an operation. Your team should explain these before you agree.
Being straight with you
Who is it not suitable for, and what can this page not tell you?
Endoscopic resection is not an option once a cancer has clearly grown deep into the wall, spread to lymph glands or reached other organs. It is also not used when scans or the biopsy suggest a more aggressive type, even if the growth looks small. In those cases, an operation, chemotherapy or radiotherapy is usually discussed instead.
When the final answer comes later
Sometimes the team cannot be sure how deep a growth goes until it has been removed and examined. The resection then works as both treatment and test. If the laboratory report shows deeper growth or cancer in tiny vessels, the team may recommend an operation afterwards. That is not a failure. It is the plan working as intended.
What this page cannot tell you
It cannot tell you whether your own growth qualifies, which technique you need, or what your follow-up will involve. Those depend on your scope pictures, biopsy and scans, read together by your treating team.
Bring every scope report, biopsy report and scan to your appointment, including older ones.Questions we are asked
Common questions about endoscopic resection
Will I be awake during the procedure?
Usually you are sedated, which means drowsy and relaxed, and many people remember very little. Longer procedures, especially ESD, are often done under a general anaesthetic so you are fully asleep. The team will tell you which to expect and what checks are needed beforehand, such as blood tests or a heart tracing.
Will it hurt afterwards?
Most people feel bloated or have mild discomfort in the chest, throat or belly for a short while. The wound is on the inside lining, which has few pain nerves. Pain that is severe, getting worse, or comes with a fever is not expected and needs to be checked the same day.
How soon can I eat normally again?
After a small polypectomy, often the same day. After a larger EMR or ESD, you usually start with sips of water, then liquids, then soft food over the next few days. Spicy, hard and very hot food is often avoided for a while. Your team will give you written instructions for your own procedure.
What happens if the report says the edges are not clear?
It depends on what was found at the edge and how deep the cancer went. Sometimes a repeat scope procedure or close watching is enough. Sometimes an operation is advised. Your team will go through the report with you and explain why they are recommending one path over another.
Will I need more scopes after this?
Yes. Regular check scopes are part of the treatment, not an extra. They look for any regrowth at the site and for new early growths elsewhere in the lining. The first check is usually a few months after the resection, and the gap between scopes lengthens if all is well.
My father is elderly and has heart problems. Is this safer for him?
It is often gentler on the body than an operation, which is one reason teams consider it for older or frail patients. But it still carries risks, and sedation or anaesthesia needs a proper check first. Whether it is the right choice for him is a decision for his treating team, with him and the family.
Can I keep taking my blood thinner?
Tell the team early about aspirin, clopidogrel, warfarin or any newer blood thinner. Some are paused, some are continued, and some are switched for a while. The decision balances the risk of bleeding against the risk of a clot, so it must come from your doctors. Never stop one on your own.
Is endoscopic resection covered by Aarogyasri or insurance?
Coverage depends on the scheme, the procedure code and whether cancer has been confirmed. Aarogyasri, CGHS, ECHS and EHS may apply, and many cashless insurers cover it as a day-care or inpatient procedure. Call the helpline with your card details and reports so the cover can be checked before you plan the date.
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Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
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Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
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Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
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Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
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Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
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Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
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Sources
- Cancer Research UK — Stomach cancer
- National Cancer Institute — Esophageal cancer treatment (PDQ), patient version
- National Cancer Institute — Gastric cancer treatment (PDQ), patient version
- NHS — Colonoscopy
- NICE — Oesophago-gastric cancer: assessment and management in adults (NG83)
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
EMR and ESD ExplainedHow the two main techniques differWhich Early Cancers Can Be Removed EndoscopicallyThe features the team checks before offering itWhen Endoscopic Resection Is Not EnoughWhy an operation is sometimes advised afterwardsDeciding on Cancer SurgeryWhat a surgical team weighs and what to ask
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