Medical Oncologist
CION Cancer Clinics
When endoscopic resection is not enough | CION Cancer Clinics
Sometimes an EMR or ESD removes the growth cleanly, and the pathology report still leads to a recommendation for an operation. That happens when the report shows features that make spread to the nearby lymph glands more likely, and a scope cannot remove glands. This page explains which findings trigger that advice, what happens next, and what the operation is meant to find out. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
MI
Medically reviewed by Dr. Mohammed ImaduddinConsultant Surgical Oncologist · MBBS, MS (General Surgery), MCh (Surgical Oncology) · last reviewed September 2026, next review due September 2027
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On this page
- Why would I need an operation when the growth is already out?
- Which findings on the report lead to a recommendation for surgery?
- What are the steps between the report and the operation?
- Four things families say at this point, and what is true
- What this page cannot tell you
- Common questions when surgery follows an endoscopic resection
The short answer
Why would I need an operation when the growth is already out?
Because the scope removed what could be seen, but the pathology report shows the cancer had features that make spread to the nearby lymph glands more likely. A scope cannot remove lymph glands. An operation can, and it lets the pathologist check whether any gland was involved. That is the reason surgery is being discussed, even though the growth itself has gone.
What the endoscopist could not know beforehand
Before the resection, the team judged the growth from its surface and how it lifted. That judgement is good but not perfect. Only when the whole piece is examined under the microscope can the pathologist see how deep the cancer went, whether it had entered tiny blood or lymph vessels, and whether the edges are clear. The resection was the right first step. It is also the test that revealed the need for more.
What the team is weighing now
They are weighing the chance that cancer cells have reached a lymph gland against the risks of an operation for you. That chance is judged from the report features described below, not from how you feel. The operation removes the segment of bowel, stomach or food pipe where the growth was, along with the glands that drain it.
Who an operation may not suit
Someone frail, with serious heart or lung disease, or with only one minor worrying feature on the report, may be offered close watching with scopes and scans instead. That is a real option, with its own risks, and it is a decision for your treating team with you.
Nothing on this page tells you what your own team will advise. It tells you what they are looking at and why.On the pathology report
Which findings on the report lead to a recommendation for surgery?
One of these alone may be enough. Two or more usually settle it. Your surgeon will point to the exact lines.
Depth of invasion
How far the cancer grew into the wall beneath the lining. The deeper it went, the more likely it reached the vessels that lead to lymph glands. The report usually gives a depth in micrometres or a layer name.
Lymphovascular invasion
Cancer cells seen inside tiny blood or lymph vessels within the specimen. It means the cancer had found a route out, even if no gland has been shown to be involved yet.
Poorly differentiated cells
Cells that look very unlike the normal lining. High-grade or poorly differentiated cancers behave more aggressively, and this counts against watching alone.
Also written as
- High grade
- Signet ring or mucinous type
- Tumour budding, meaning small clusters breaking off the edge
A positive or unclear deep margin
Cancer cells at or very near the cut edge underneath. Some tissue may have been left behind. When the piece came out in fragments, the pathologist may simply be unable to say, and that uncertainty itself weighs towards an operation.
Not sure whether this applies to you?
Ask an oncologistWhat happens next
What are the steps between the report and the operation?
Tumour board review
The endoscopist, surgeon, pathologist and oncologists look at the slides and pictures together and agree whether the features justify an operation, closer watching, or a second opinion on the slides.
Staging scans
Usually a CT scan of the chest and abdomen, sometimes a PET-CT or an MRI for rectal or food-pipe growths. These check whether anything has already spread beyond the glands, which would change the plan.
Meeting the surgeon
You are told which operation, why, what is removed, whether a stoma is possible, and how long recovery usually takes. Bring the pathology report and your questions. Bring the family member who will be with you.
Fitness checks and the operation
Blood tests, a heart check and an anaesthetist's review. The operation is usually keyhole where possible. The ink mark placed at the scope shows the surgeon exactly where the growth was.
Commonly believed
Four things families say at this point, and what is true
"The scope failed, so the first doctor made a mistake."
The scope did what it was meant to do. It removed the growth and produced a specimen that showed the true depth and grade. Without it, the same operation would have been needed anyway, but with less information. Endoscopic removal first is standard practice for growths that look early.
"The growth is out, so waiting a few months is fine."
The concern now is cells that may already be in the lymph glands, not the growth. Those cells do not wait. A short delay for scans and fitness checks is normal. A long delay to think it over or try other remedies is not.
"An operation means a permanent bag."
For most bowel operations at this stage the two ends are joined and there is no stoma. A temporary one is sometimes needed for low rectal operations. Food-pipe and stomach operations do not involve a bag. Ask your surgeon directly rather than assuming.
"If the glands are clear after surgery, the operation was unnecessary."
Clear glands are the good outcome the operation was done to confirm. There was no way to know that beforehand. Most people in this position turn out to have clear glands, and the operation is what allows the team to say so with confidence.
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Did you know
Every case at CION is discussed at a tumour board, where the surgeon, the endoscopist, the pathologist and the oncologists sit together. The recommendation you receive after an endoscopic resection is not one doctor's opinion of a report. It is a decision made by the whole team looking at the slides.
Being straight with you
What this page cannot tell you
This page cannot tell you whether you need an operation. That depends on the exact features on your report, your fitness, and the judgement of a team that has seen the slides. It also cannot tell you what the glands will show. Only the operation can.
What the operation may find
Most often the glands are clear and no further treatment is needed beyond follow-up. If one or more glands contain cancer, chemotherapy after the operation is usually discussed. Either way the pathology report from the operation is the one that sets the plan from here.
What watching instead involves
If you and your team decide against an operation, the alternative is a schedule of scopes and scans over several years, looking for any sign of regrowth or gland involvement. It is not doing nothing. It carries the risk that a spread is found later rather than removed now, and that risk should be explained to you in plain words.
Questions worth asking
Which features on my report led to this advice? Has a second pathologist reviewed the slides? What exactly will be removed, and will I have a stoma? What would watching instead involve, and what are its risks for me?
Send us the endoscopy and pathology reports. A CION surgical oncologist will go through the features with you and explain what the options are.Questions we are asked
Common questions when surgery follows an endoscopic resection
Does this mean the cancer has already spread?
No. It means the report shows features that make spread to the lymph glands possible, not that it has happened. Staging scans check the rest of the body first. The operation is done to remove the glands and find out. In most people in this position, the glands turn out to be clear.
How soon should the operation happen?
Usually within a few weeks, once scans and fitness checks are done and the wound from the resection has had a little time to settle. Your surgeon sets the timing. A short, planned delay is normal. A long unplanned one, to seek other remedies or wait for a festival, is worth avoiding.
Can we get a second opinion on the slides?
Yes, and for a decision this size it is reasonable. Ask for the slides or blocks to be reviewed by a second pathologist, ideally one who sees a lot of gastrointestinal cancers. Features such as depth and tumour budding can be judged slightly differently, and a second reading sometimes changes the advice.
Will I need chemotherapy as well?
That is decided after the operation, from whether any lymph gland contained cancer and what the final stage is. If the glands are clear, chemotherapy is usually not needed. If they are not, it is usually discussed. Nobody can answer this before the operation, and you should be wary of anyone who does.
Is keyhole surgery possible after an endoscopic resection?
Often yes. The resection site is usually small and the ink mark makes it easy to find. Whether keyhole is used depends on where the growth was, your build, and any earlier abdominal operations. Ask your surgeon which approach they plan and why.
What if I decide not to have the operation?
That is your right, and your team should respect it while making the risks clear. You would be offered a schedule of scopes and scans to watch for regrowth or gland involvement. Ask what would happen if something is found later, so that you are choosing with your eyes open.
My parent is in their eighties. Is the operation still advised?
Age alone does not decide it. Fitness does. Many people in their eighties come through a keyhole bowel operation well; some are better served by watching. The anaesthetist and surgeon will assess heart, lungs, kidneys and general strength, and should tell you honestly which way the balance falls.
Is the operation covered by Aarogyasri or my insurance?
Cancer surgery is generally covered under Aarogyasri, CGHS, ECHS and EHS, each with its own approval process and ceiling. Cashless insurers usually need the pathology and scan reports for pre-approval. Call the helpline with your card and reports and we will check what applies to you before the date is fixed.
Meet the Specialists
17+ senior cancer specialists. One panel for your case.
Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.
Medical Oncologist
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)
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Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
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Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
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Hematologist
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Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
Surgical Oncologist
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Sources
- Cancer Research UK — Surgery for bowel cancer
- National Cancer Institute — Colon cancer treatment (PDQ), patient version
- American Cancer Society — Surgery for colon cancer
- NICE — Colorectal cancer (NG151)
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
Reading the Endoscopic Resection Specimen ReportEvery word on the report that leads to this decisionWhich Early Cancers Can Be Removed EndoscopicallyWhy the growth was judged suitable for a scope in the first placeDeciding on Cancer SurgeryWhat a surgical team weighs and what to askFitness, Tests and PrehabilitationThe checks that come before any operationThe Pathology Report After SurgeryWhat the operation specimen will tell you
Talk to us
Been told you need an operation after an endoscopic resection?
Send us the endoscopy and pathology reports. A CION surgical oncologist will go through the features line by line and explain what the options are for you.