WhatsApp Skip to main content

Dr. Harsh J Shah

Locally Advanced Stomach Cancer: How It Is Treated

Last updated: 19-Oct-2026

Dr Harsh Shah, stomach cancer surgeon, Ahmedabad

Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Registered with Gujarat Medical Council, Reg. No. G-38738
Stomach Cancer Surgeon
Apollo Hospital, Bhat, Gandhinagar · Gota OPD, Ahmedabad · 18 years of experience
★★★★★ Google: 4.89 from 216 reviews (Gota clinic) · 4.94 from 18 reviews (Apollo, Bhat)

In short

Locally advanced stomach cancer has grown into or through the stomach wall, or reached nearby lymph nodes, with no spread to distant organs.

Chemotherapy is given before the operation and again after it. Most patients who are fit receive four cycles on each side.

The operation removes the lymph nodes along the stomach’s own blood vessels in a set pattern. That clearance is called D2.

A scan after chemotherapy decides whether the operation goes ahead. A tumour that did not shrink is usually still removed.

What "locally advanced" means on your report

Three lines of the report settle this. How deep the tumour has grown, whether the nodes nearby hold cancer, and whether anything is seen further away.

Locally advanced means the first two are present and the third is not. The letters read as cT2 to cT4, N0 to N3, and M0.

What the letters on a locally advanced stomach cancer report usually mean
On the reportWhat it means
cT2 or cT3The tumour has grown into, or just through, the muscle layer of the stomach wall.
cT4aThe tumour has grown through the outer covering of the stomach.
cT4bThe tumour has grown into a neighbour, such as the pancreas, spleen or colon.
N1 to N3One or more lymph nodes near the stomach hold cancer.
M0No spread was seen in the liver, the lungs or the lining of the abdomen.

A cT4b tumour is still locally advanced. It is the hardest group to plan, because removing it means taking part of the neighbouring organ with the stomach.

Why the medicine comes before the operation

For this group, chemotherapy first is the standard. There are four plain reasons.

  • It shrinks the tumour. A removal with a clear rim of normal stomach then becomes more likely.
  • It treats cells that may already have travelled, before the operation.
  • It shows how the tumour behaves. That answer guides the treatment after surgery.
  • It is tolerated better before a major operation than after one.

The same chemotherapy is then given again after the operation. This is why it is called peri-operative treatment, which simply means around the operation.

The half given after surgery is the part most often dropped. Appetite and strength return slowly, yet starting it when the body allows still matters.

The plan, cycle by cycle

  1. The biopsy tissue is tested for a small set of markers that can change which medicines are chosen.
  2. A keyhole look with a saline wash checks for deposits the scan cannot see.
  3. Chemotherapy, usually four cycles, over about two months.
  4. A fresh scan and endoscopy to see what the tumour has done.
  5. The operation, if the disease is still confined to the stomach and its nodes.
  6. The removed stomach and nodes are examined in detail.
  7. Chemotherapy again, usually four more cycles, once recovery allows.
  8. Planned follow-up visits.

Nutrition runs through all of it. Weight loss during the waiting weeks is the commonest reason a planned operation slips.

What the operation removes

The operation takes the part of the stomach that holds the tumour, a rim of normal stomach around it, and the nodes that drain it. The tumour’s position decides how much stomach goes.

Where the tumour sits, and how much stomach is removed
Where the tumour isUsual operation
Lower thirdThe lower part of the stomach is removed, and the remainder is joined to the small bowel.
Middle (body)Part or all of the stomach. The distance from the tumour to the food pipe decides it.
Upper thirdThe whole stomach, with the lowest part of the food pipe if the tumour reaches it.
Spreading through the wallThe whole stomach, with wider rims of normal tissue above and below.

The rim needed is not the same for every tumour. A cancer made of well formed glands needs a smaller rim than one made of scattered single cells. The edges are checked under the microscope while the operation is still going on.

Each of these operations is described in more depth on the pages for cancer in the lower stomach, cancer in the middle of the stomach and cancer at the top of the stomach.

The node clearance follows a set pattern along the arteries that feed the stomach. The spleen and the pancreas are not removed as a routine part of it. Nodes near the top of the spleen are taken while the spleen itself stays.

One line of the pathology report is a check on the operation. It says how many lymph nodes the laboratory found. At least sixteen should be examined, and specialist teams aim well above that.

When the response to chemotherapy is poor

Not every tumour shrinks. The scan done after chemotherapy sorts patients into three situations.

  1. The tumour has shrunk, or has stayed the same, and nothing new is seen. The operation goes ahead as planned.
  2. The tumour has not shrunk, but it is still confined to the stomach and the nodes nearby. The operation usually still goes ahead. A tumour that resists the medicine is not a reason to leave it in place.
  3. New disease has appeared in the liver, the lungs or the lining of the abdomen. The operation is called off, and treatment continues as medicine.

After the operation, the report on the removed stomach decides the rest. If the stage is higher than expected, chemotherapy continues. If an edge came back involved, a second removal is considered where it is possible, and radiotherapy with chemotherapy where it is not. If the first combination proved too hard to tolerate, a gentler pair of medicines is used for the second half.

When an operation is not the answer

A few locally advanced cancers are better not operated on, at least not first.

  1. Cancer cells found in the saline wash, even when the scan looked clear.
  2. Deposits seen on the lining of the abdomen during the keyhole look.
  3. A tumour fixed to the main blood vessels behind the stomach.
  4. A patient whose heart, lungs or nutrition will not carry both a gastrectomy and chemotherapy.

Here, treatment is led by medicine, and the aim is set out plainly before it starts. Which stomach cancers are operated on, and in what order, is covered on the page about the order of stomach cancer treatment.

Keyhole, robotic or open

Keyhole removal of the lower stomach with a D2 clearance is an accepted standard for this group, and large trials have shown it holds its own against the open operation. Keyhole removal of the whole stomach is done in specialist units. Robotic surgery is used in selected patients.

The route matters less than the clearance. A D2 node clearance with clear edges is the goal, whichever way the surgeon reaches it.

The open operation keeps a clear place. It is the right choice when a neighbouring organ has to come out with the stomach, and when a node clearance to this standard cannot be delivered any other way.

Radiotherapy, and where it fits

Radiotherapy is not usually added after a proper D2 clearance with chemotherapy on both sides of the operation. It is kept for two narrow situations: an operation in which the node clearance was limited, and an edge that came back involved and cannot be removed again.

If chemotherapy was not given before the operation

Some patients reach theatre first. The cancer announced itself as an emergency, or the plan changed along the way. After a D2 operation, chemotherapy for about six months is then given instead. This is a sound plan, widely used, and it is what is offered here when the first half was missed.

Four questions worth asking before the first cycle

Questions to ask at the consultation, and why each one matters
QuestionWhy it matters
Has a keyhole look with a saline wash been done?It finds disease that changes the whole plan before a major operation.
How many cycles before surgery, and how many after?It sets expectations for the second half, which is easy to abandon.
When will the response be checked, and with what test?The date of that scan is the date the operation is confirmed.
Will the clearance be a D2, and who reports the node count?Both are measures of whether the operation did its job.

Frequently asked questions

Why is chemotherapy given before the operation and not after it alone?

Giving it first shrinks the tumour, treats cells that may have travelled, and shows how the tumour responds. That response then guides the treatment after surgery.

My tumour did not shrink on the scan. Is the operation cancelled?

Usually not. If the disease is still limited to the stomach and the nodes nearby, the operation goes ahead. It is called off only if new spread has appeared.

What does a D2 clearance actually mean?

It means the lymph nodes along the stomach's own arteries are removed in a set pattern, not just the ones beside the tumour. The spleen and pancreas stay.

Do I have to take the chemotherapy after the operation too?

It is part of the same plan, and it is the half most often dropped. It is started when appetite and strength allow, and the dose is adjusted to what you can manage.

Can this operation be done by keyhole surgery?

Removal of the lower stomach with a D2 clearance is a keyhole standard. Removal of the whole stomach is done this way in specialist units. A tumour growing into a neighbouring organ needs an open operation.

Where Dr Harsh Shah sees patients and operates

Shah’s Gastro, Cancer & Robotic Surgery Centre, Gota, Ahmedabad

Consultation, review of endoscopy, biopsy and scan reports, second opinions and follow-up.

+91-63555-64601 · Directions to the Gota clinic

Apollo Hospital, Bhat, Gandhinagar

Apollo Hospital International Limited, GIDC Bhat Industrial Estate, Bhat, Gandhinagar. Staging laparoscopy, gastrectomy with D2 clearance and inpatient care.

WhatsApp +91-63555-64601 · Directions to Apollo, Bhat

Has the report called your stomach cancer locally advanced, and are you being offered chemotherapy before the operation? The endoscopy, biopsy, CT and laparoscopy reports can be sent ahead on WhatsApp, so the consultation starts with them already read. Your treatment is decided at the consultation, after examination. Call +91-63555-64601 Send reports before your visit

Rate this post

Get health updates from Dr Harsh Shah on WhatsApp

Swasth Parivar: twice a month, practical advice on recovery, diet and warning signs. No advertising. Stop any time.

Your number is used for these updates and for the clinic to reach you. It is never sold or passed on. To stop, reply STOP on WhatsApp.

Dr. Harsh J Shah
Dr Harsh Shah - Surgical Gastroenterologist and GI Robotic Surgeon, Ahmedabad
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.