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GI biopsy results

H. Pylori Testing on a — Stomach Biopsy

A biopsy that finds H. pylori is not a cancer diagnosis. It is one of the most common infections in the world, and most people in India who carry it have no symptoms at all. Here is what a positive result means and what happens next.

Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed September 2026

  • Very common infection — H. pylori affects a large proportion of adults in India. A positive result is not unusual or alarming on its own.
  • Treatable with medication — A short course of treatment clears the infection in most people who complete the full course.
  • A small but real cancer risk — H. pylori is a recognised risk factor for stomach cancer, but most people with the infection do not develop cancer.
  • Often found on a routine biopsy — It is frequently spotted when small samples are taken during an endoscopy done for an entirely different reason.
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H. pylori is a bacterium that lives in the stomach lining. It is one of the most common infections in the world, and in India it is extremely prevalent. A positive biopsy result means the infection is present — not that you have cancer. It is treatable with a short course of medication.

What is H. pylori and why does it matter?

H. pylori is a bacterium that settles in the mucus layer of the stomach lining. Most people who carry it have no symptoms at all and would never know it was there without a test.

It spreads through contaminated food, water, and close contact. It is far more common in India than in Western countries, particularly in households where children grew up without access to treated drinking water.

When it does cause problems, it inflames the stomach lining or creates open sores called peptic ulcers. It is also classified by the WHO's cancer research body, IARC, as a cause of stomach cancer in a proportion of long-term carriers — which is why it is taken seriously and treated when found.

What symptoms should you mention to your doctor?

  • Stomach pain or a burning feeling, especially when your stomach is empty
  • Feeling full very quickly when eating, even after only a small amount of food
  • Nausea that comes and goes, or frequent burping
  • Unexplained loss of appetite or unintended weight loss
  • Blood in your stool or vomit — this needs hospital assessment the same day, not a routine call

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Does H. pylori cause stomach cancer?

H. pylori is a genuine risk factor. IARC classifies it as carcinogenic to humans, with the strongest evidence for stomach cancer and a rare stomach lymphoma called MALT lymphoma.

However, most people who carry H. pylori do not develop cancer. The risk is real but small, and it is higher in people who have had the infection for a long time without treatment.

Treating the infection reduces this risk. This is one of the main reasons a positive biopsy result is acted on, even in people who feel completely well.

What does treatment for H. pylori involve?

Treatment is a short course of tablets — a combination of medicines taken together, usually for one to two weeks. Your doctor will prescribe what is right for you. Do not start or copy a course based on what someone else was given.

Completing the full course is the most important thing, even if you feel better before it ends. Stopping early is the main reason the infection can return.

A follow-up test is usually arranged a few weeks after treatment ends to confirm the infection has cleared. Ask your doctor when this will be and what form the test will take.

Did you know?

H. pylori is estimated to be present in more than half of the world's population, making it one of the most widespread bacterial infections that humans carry.

In South Asia, carriage rates are particularly high — yet the majority of people who have it will never develop an ulcer or any other complication.

Source: WHO International Agency for Research on Cancer (IARC)

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Common questions

Frequently asked questions

Does a positive H. pylori result on a biopsy mean I have cancer?

No. A positive result means the bacterium is present in your stomach lining — nothing more. H. pylori is one of the most common infections in the world, and the large majority of people who carry it never develop cancer or serious complications. It is a risk factor your doctor takes seriously, which is why it is treated when found — not a cancer diagnosis in itself.

How accurate is a biopsy for detecting H. pylori?

A biopsy taken during an endoscopy is one of the more reliable ways to detect H. pylori. The tissue sample is examined directly in a laboratory. Like any test, the result can be affected by where the sample was taken and whether you were using certain stomach-acid medicines before the procedure. Your doctor will know whether the result is reliable for your situation, and can repeat the test if needed.

Can H. pylori come back after treatment?

Yes, re-infection is possible, particularly where the infection is common. Completing the full prescribed course gives the best chance of clearing it the first time. A follow-up test a few weeks after finishing confirms whether it has gone. If the infection persists, your doctor will look at why and discuss the next step with you.

I have no symptoms at all. Do I still need treatment?

In most cases, yes. Treatment is recommended even in people without symptoms because it reduces the small but genuine long-term risk of ulcers and stomach cancer. Your doctor will consider your age and overall health before recommending a course of action. Do not decide on your own to skip treatment because you feel well — the reason for treating it is the future risk, not the current symptom.

Are there foods I should avoid during treatment?

The medicines used to treat H. pylori can sometimes cause nausea or an unsettled stomach, and avoiding alcohol during the course is generally advised. Beyond that, no specific diet is needed for the treatment to work. Some people find smaller, more frequent meals more comfortable during the course. Ask your prescribing doctor if you have specific concerns — they can advise based on exactly what has been prescribed for you.

My endoscopy was done for something else. Why did the biopsy look for H. pylori?

Gastroenterologists routinely take small samples from the stomach lining during an endoscopy because H. pylori is so common and so often symptomless. Finding and treating it when it turns up incidentally is straightforward and prevents potential problems later. It does not mean your doctor suspected cancer or was worried about something specific — it is a routine check done while the endoscope was already in place.

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