The short answer
Metaplasia on a report means one type of tissue has changed into another. The best-known example is Barrett esophagus, where the lining of the esophagus becomes more like the lining of the intestine. Most people with Barrett esophagus do not develop cancer, but they are watched because the risk is higher. Dysplasia is a separate finding, graded low or high.
Metaplasia means one type of tissue has changed into another type.
The best-known example is Barrett esophagus, where the esophagus lining becomes more like the intestine lining.
NIDDK says most people with Barrett esophagus do not develop cancer, but their risk of esophageal cancer is higher.
Dysplasia is a separate finding. Doctors classify it as low grade or high grade, and high grade carries more risk.
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The whole article, with every detail and caution.
This page is for people who see "metaplasia" on a biopsy or pathology report. It explains the word, the best-known example, and how it differs from dysplasia. It cannot tell you what your own report means. Your doctor can.
What the word means
Metaplasia means one type of tissue has changed into another type. The word on its own is not a cancer diagnosis. What matters is which tissue is involved, and whether dysplasia is also reported.
Barrett esophagus, the best-known example
NIDDK describes Barrett esophagus as a condition in which the lining of the esophagus changes. The tissue that lines the esophagus becomes more like the tissue that lines the intestine.
NIDDK says experts do not know the exact cause. Gastroesophageal reflux disease (GERD) raises the chance of developing it. NIDDK lists other risk factors: being male, White, age 50 or older, tobacco use, belly fat, and a family history of Barrett esophagus or esophageal cancer. It says researchers estimate about 5 percent of adults in the United States have it.
Doctors most often diagnose it with an upper endoscopy and a biopsy. Some doctors may use a pill-shaped capsule device that you swallow.
What the risk looks like
NIDDK says people with Barrett esophagus have a higher risk of esophageal cancer. It also says most people with Barrett esophagus do not develop cancer. Cancer can take many years to develop.
NCI links esophageal adenocarcinoma strongly to long-lasting GERD with daily severe symptoms. NCI says long-term acid exposure can change the cells of the lower esophagus. It notes that radiofrequency ablation is a treatment option for people with abnormal cells. It also says it is not known whether surgery or other treatment to stop reflux lowers the risk of this cancer.
Ask your team about your own risk and how often you need follow-up.
Metaplasia is not dysplasia
These two words sit near each other on reports and mean different things. Metaplasia is a change in the type of tissue. Dysplasia is abnormal-looking cells.
NIDDK says doctors classify dysplasia as low grade or high grade, depending on how the cells look under a microscope. People with high-grade dysplasia face a higher risk of cancer than those with no dysplasia or low-grade dysplasia. For the next step in this series, see what dysplasia means.
The cervix
NCI describes two kinds of cells in the cervix. Squamous cells are on the outer part. Columnar, glandular cells line the inner canal. They meet at the squamocolumnar junction. NCI says most precancerous and cancerous changes arise in this zone. If your report mentions this area, ask what the finding means for you and what follow-up is advised.
What the report should say alongside it
NCI's fact sheet on pathology reports describes what a full report contains:
- a gross description of the sample as seen by the naked eye, such as color, weight and size
- a microscopic description of how the stained cells look
- a final diagnosis
NCI says the tissue is fixed, usually with formalin, embedded in paraffin and sliced. This normally takes several days. The pathologist typically sends the report to the doctor within 10 days after the biopsy or surgery. NCI also says you can ask for a second opinion by getting your slides from the original pathologist or hospital.
For the wider picture, see understanding your pathology report.
Questions for the clinician who ordered the biopsy
- Which tissue is involved, and what type of metaplasia is it?
- Does the report mention dysplasia, and at what grade?
- How much tissue was involved, and how many biopsies were taken?
- Does this put me into a surveillance program, and how often?
- Was this found by chance, or because of a symptom?
- Would a second pathology opinion change anything here?
Sources
Common questions
Does metaplasia mean cancer?
Not by itself. Metaplasia means one type of tissue has changed into another. It is a different finding from dysplasia and from cancer. Ask your doctor what it means for the tissue named on your report.
What is Barrett esophagus?
A condition in which the lining of the esophagus changes and becomes more like the lining of the intestine, according to NIDDK. Long-term acid reflux (GERD) raises the chance of it. Doctors most often diagnose it with an upper endoscopy and a biopsy.
How likely is Barrett esophagus to become cancer?
NIDDK says most people with Barrett esophagus do not develop cancer, but they have a higher risk of esophageal cancer. People with high-grade dysplasia face a higher risk than those with no dysplasia or low-grade dysplasia. Cancer can take many years to develop. Ask your doctor about your own risk.
What is the difference between metaplasia and dysplasia?
Metaplasia describes a change in the type of tissue. Dysplasia describes abnormal-looking cells. NIDDK says doctors classify dysplasia as low grade or high grade, depending on how the cells look under a microscope.
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Sources last checked: 2026-10-02 what this meansLast updated: 2026-10-02Next planned review: 2027-07-20
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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