Skip to main contentLast updated: 27-Oct-2026
Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Registered with Gujarat Medical Council, Reg. No. G-38738
Gastro & 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
Gastric MALT lymphoma is a slow-growing lymph cancer of the stomach lining. It is driven by a long-standing H. pylori infection.
In early, shallow disease, clearing the germ with a two-week course can shrink the lymphoma and sometimes make it disappear. Surgery is rarely the answer.
Some lymphomas do not respond. A special biopsy test and an ultrasound scope tell us early which ones. Those need radiotherapy or drug treatment instead.
The full plan for lymphoma of the stomach and bowel is on the primary GI lymphoma treatment in Ahmedabad page. This post explains the most common type, how H. pylori causes it, and why the first treatment is a course of tablets.
The lining of a healthy stomach holds almost no lymph tissue. MALT lymphoma starts when that tissue grows there in response to an infection, and then one group of cells turns cancerous.
MALT stands for mucosa-associated lymphoid tissue. The lymphoma is a cancer of white blood cells called B cells. It is not the same disease as the common stomach cancer that starts in the gland cells of the lining.
How stomach cancer itself is checked and staged is covered in gastric cancer: diagnosis and workup. The two diseases are tested differently from the biopsy onwards.
H. pylori irritates the stomach lining for years. The body sends lymph cells to fight it, and in a few people one of those cell groups starts to multiply without control.
This is why the germ matters so much. Early on, the tumour depends on it. Remove the germ, and the tumour can lose its fuel.
Gastric MALT lymphoma causes ordinary stomach complaints. It looks like gastritis or an ulcer on the scope, so it is often missed on a small biopsy.
Because the disease lies in the deeper layers and in patches, a few pinches from one spot may show only gastritis. A repeat scope with a wider set of biopsies is often needed when a stomach “ulcer” does not heal.
The diagnosis rests on the biopsy. Several samples from the whole stomach, studied with special stains and gene tests, decide what the lymphoma is and how to treat it.
| Test | What it shows | Why it matters |
|---|---|---|
| Biopsies from many parts of the stomach | Lymphoma cells invading the stomach glands | Confirms the type and shows how widespread it is |
| Special stains on the tissue | The cell markers that identify a B-cell lymphoma | Separates it from other lymphomas and from simple gastritis |
| A gene test for the t(11;18) change | Whether the cells carry a known marker of resistance | Predicts that the germ treatment alone is unlikely to work |
| H. pylori test on tissue, breath or stool | Whether the germ is present | Decides the first treatment |
| Ultrasound scope (EUS) | How deep the lymphoma goes and whether nearby nodes are involved | Shallow disease is the likeliest to respond |
A CT or PET scan and blood tests complete the staging. PET can be faint in this type, so a quiet PET does not rule it out. The tissue should be sent fresh, not only in formalin, so the special tests can be done.
For almost every gastric MALT lymphoma, the first treatment is a two-week course of an acid tablet with antibiotics to clear H. pylori. It is tried even when the germ test is weak.
Early, shallow lymphoma often shrinks in a good number of patients after this course alone. Some patients with a negative germ test also respond, so the tablets are still given. The details of the medicines and their side effects are the same as for any H. pylori course, and your doctor will go through them with you.
Two different things must be checked. One is whether the germ has gone. The other, which matters more, is whether the lymphoma has shrunk on repeat biopsy.
The scope visits do not stop once the biopsy is clear. Late return of the lymphoma can happen, and the stomach also carries a higher chance of ordinary stomach cancer. Regular scopes cover both risks.
If the lymphoma does not shrink, is deep, or carries the t(11;18) marker, the next step is usually radiotherapy to the stomach. Drug treatment is for disease that has spread.
| Situation | Usual next step |
|---|---|
| Shallow disease, germ present, no resistance marker | Germ treatment, then repeat scopes |
| No shrinkage after a long wait, or the marker is present | Radiotherapy to the stomach and nearby nodes |
| Spread to other parts, or radiotherapy not suitable | Drug treatment with rituximab, planned with a blood-cancer specialist |
| Fast-growing cells found in the biopsy | Treated as an aggressive lymphoma with chemo-immunotherapy |
Radiotherapy at the doses used here usually keeps the stomach in place. The faster-growing types need a different plan, which is explained on the primary GI lymphoma treatment page.
Removing the stomach is not a treatment for this lymphoma. The surgeon’s work is to get tissue when a scope cannot, and to deal with complications.
Taking a stomach out “to be safe” removes a chance of treatment by tablets and gains nothing in return. A confirmed biopsy and a team plan should come before any operation is booked. If a stomach cancer is found instead, the options are explained in gastric cancer: pathology and molecular tests.
No. Lymphoma starts in white blood cells in the stomach wall. Stomach cancer starts in the gland cells of the lining. They are tested and treated differently.
In early, shallow MALT lymphoma, clearing H. pylori can shrink it and sometimes remove all trace on biopsy. It does not work for every type, so repeat scopes are needed.
Tablets are often still tried, because the germ can be hard to find. Some patients with a negative test still respond. Your doctor will repeat the tests on tissue.
The breath or stool test is done about four weeks after the course. The lymphoma itself shrinks slowly, so repeat biopsies over many months show the real answer.
Most people with early MALT lymphoma need neither at first. Radiotherapy or drug treatment is kept for lymphoma that does not respond or has spread.
Yes, sometimes years later. That is why scopes continue after a clear biopsy. The stomach also needs watching for ordinary stomach cancer.
The full range of care is on the primary GI lymphoma treatment page. For questions before you travel, call +91-63555-64601.
Shah’s Gastro, Cancer & Robotic Surgery Centre, Gota, Ahmedabad
Consultation, review of endoscopy, biopsy and scan reports, second opinions and follow-up.
Apollo Hospital, Bhat, Gandhinagar
Apollo Hospital International Limited, GIDC Bhat Industrial Estate, Bhat, Gandhinagar. Endoscopy and biopsy, CT scans, surgery for stomach and duodenal disorders, and inpatient care.
A report that says "lymphoma" is frightening. This one is a different disease from stomach cancer, and the first step is often a course of tablets. If you want a second opinion on your biopsy or scope report, send it ahead on WhatsApp. The plan is decided only after examination. Call +91-63555-64601 Send your biopsy report before the visit
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