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NK/T-cell lymphoma of the nose: what families need to know | CION Cancer Clinics
NK/T-cell lymphoma, nasal type, is a rare, aggressive lymphoma that usually starts in the nose, sinuses or roof of the mouth, and is linked to the Epstein-Barr virus. It often looks like stubborn sinusitis at first. Treatment usually combines radiotherapy with asparaginase-based chemotherapy, because standard lymphoma chemotherapy works poorly. This page explains symptoms, diagnosis and treatment, and what it cannot tell you about your own outlook. At CION Cancer Clinics, our haematology team plans myeloma and lymphoma care with you, discussed at a tumour board and explained in plain words.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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The short answer
What is NK/T-cell lymphoma, nasal type?
NK/T-cell lymphoma, nasal type, is a rare but aggressive lymphoma that usually starts in the nose, sinuses or the roof of the mouth. It is linked to the Epstein-Barr virus and needs prompt treatment, usually radiotherapy combined with a specific kind of chemotherapy.
Where it comes from
The lymphoma grows from natural killer (NK) cells or, less often, T cells. Both are white blood cells that normally attack infected cells. In this lymphoma, the cells almost always carry the Epstein-Barr virus, or EBV, a common virus most people catch in childhood without harm. Why it leads to lymphoma in a few people is not fully understood. It is seen more often in East Asia and parts of Latin America, and it does occur in India.
Why it is easy to miss
Early on it looks like sinusitis, a blocked nose or a stubborn nasal ulcer. People often take several courses of antibiotics before anyone takes a biopsy. The lymphoma also destroys tissue, so the first biopsy may show only dead tissue and inflammation, and a repeat biopsy is often needed.
Nasal type, and other places
The word "nasal" describes where it most often starts. The same lymphoma can also appear in the skin, gut or testes. Your report may call it extranodal NK/T-cell lymphoma, which simply means it grows outside the lymph nodes.
What people notice
What symptoms should make a doctor think of it?
These symptoms are far more often caused by infection or allergy. The concern rises when they do not settle with usual treatment.
Nose and sinuses
A blocked nose on one side that does not clear, bloody or foul-smelling discharge, crusting inside the nose and repeated nosebleeds. The sense of smell may fade.
Mouth and face
An ulcer or hole in the roof of the mouth, swelling of the cheek or around the eye, or a sore on the nose that keeps breaking down. Teeth may loosen, and eating or speaking can become uncomfortable.
Whole-body symptoms
Fevers without a clear infection, drenching night sweats and weight loss you cannot explain.
Tell the doctor if
- Antibiotics have not helped
- The problem keeps getting worse
Less common signs
Skin lumps or ulcers, tummy pain or bleeding from the gut when the lymphoma starts outside the nose.
A symptom list cannot diagnose lymphoma. Only a biopsy can.Not sure whether this applies to you?
Ask an oncologistGetting the diagnosis
How is it diagnosed and staged?
Nose and throat examination
An ENT specialist looks inside the nose with a thin camera and takes a deep biopsy from the living edge of the abnormal area. Several pieces are usually taken, because surface samples often miss the lymphoma.
Pathology tests
Stains show NK or T-cell markers, and a test called EBER shows EBV inside the cells. A repeat biopsy may be needed if the first shows only dead tissue.
EBV blood test
The amount of EBV DNA in the blood is measured. It helps judge the outlook and is repeated to see how treatment is working.
Scans and marrow
A PET-CT and an MRI of the face show how far the lymphoma has spread, including into the bone and around the eye. A bone marrow test may be advised. Together these decide whether radiotherapy can lead the plan.
Treatment
How is nasal NK/T-cell lymphoma treated?
When the lymphoma is limited to the nose and nearby area, treatment usually combines radiotherapy to the area with chemotherapy. Radiotherapy is a central part of the plan, not an add-on. When it has spread more widely, chemotherapy leads, sometimes followed by a stem cell transplant at a qualified centre.
Why the chemotherapy is different
These lymphoma cells pump many standard chemotherapy drugs back out, so the combination used for most other lymphomas works poorly. Plans for this lymphoma are built around a drug called asparaginase, often with gemcitabine, oxaliplatin or other drugs. Your haematologist and radiation oncologist plan the order together.
If it comes back
Immunotherapy drugs that release the brake on the immune system, known as PD-1 inhibitors, have helped some people whose lymphoma returned. A clinical trial may also be worth asking about. Whether these drugs are available, approved and covered for you is a fair question to raise early, because access varies.
Who a plan may not suit, and what this page cannot say
Asparaginase can affect the liver, pancreas and clotting, so people with serious liver disease may need changes. This page cannot tell you your outlook. Stage, EBV levels and response to treatment shape that, and your haematologist can explain your own picture.
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Signs that need care today
A nosebleed that will not stop after pressing the soft part of the nose, bleeding with dizziness or fainting, sudden trouble breathing through the mouth, or a high fever during treatment needs emergency care. Go to the nearest emergency department or call 108, and tell them about the lymphoma and any treatment. Do not wait for your next appointment.
Commonly believed
What do families often misunderstand?
"It is just sinusitis, another course of antibiotics will fix it."
Most sinus problems are infections. But a one-sided blocked nose with bleeding or an ulcer that has not improved after treatment needs an ENT examination and possibly a biopsy.
"EBV means it is contagious."
EBV is a common virus that most adults already carry. The lymphoma itself does not spread from person to person. Family members do not need to avoid the patient.
"Surgery to remove it is the main treatment."
Surgery is used mainly to get a biopsy. Treatment relies on radiotherapy and chemotherapy, because the lymphoma spreads through tissue in ways surgery cannot fully remove.
"The first biopsy was negative, so it cannot be lymphoma."
This lymphoma often causes dead tissue that hides the cancer cells. If symptoms continue, a repeat, deeper biopsy is reasonable.
On your report
What do the words on the report mean?
- ENKTL
- Extranodal NK/T-cell lymphoma, the full name of this lymphoma.
- EBER positive
- The lab found Epstein-Barr virus material inside the lymphoma cells, which supports the diagnosis.
- CD56
- A marker found on NK cells, often positive in this lymphoma.
- Necrosis
- Dead tissue. Common in this lymphoma and a reason biopsies may need repeating.
- Plasma EBV DNA
- A blood test measuring virus levels. Falling levels during treatment are usually a good sign.
Questions we are asked
Common questions about nasal NK/T-cell lymphoma
Is NK/T-cell lymphoma the same as nose cancer?
No. Most cancers of the nose and sinuses start in the lining cells, and are treated differently. NK/T-cell lymphoma is a blood cancer that happens to grow in the nose. The biopsy report tells them apart, so ask your doctor exactly which type has been found.
Will radiotherapy change my face?
Radiotherapy to the nose and sinuses can cause a dry nose, crusting, a dry mouth and skin redness during and after treatment. The lymphoma itself can damage tissue, so some changes may come from the disease rather than the treatment. Ask your radiation oncologist what to expect.
Why is asparaginase used instead of normal lymphoma chemotherapy?
The lymphoma cells can push many common chemotherapy drugs out, so those drugs work poorly. Asparaginase starves the cells of a building block they need. It can affect the liver, pancreas and clotting, so blood tests are checked closely.
Does my father need a stem cell transplant?
Not everyone does. It is usually considered when the lymphoma is advanced or has come back after responding again to treatment. CION's haematology team reviews the case at a tumour board and, if a transplant is advised, coordinates referral to a qualified centre.
How is the EBV blood test used during treatment?
It is checked at diagnosis and repeated during and after treatment. Levels that fall and stay low are usually encouraging. Levels that rise again may prompt more tests. One result is read alongside scans and symptoms, not on its own.
Can family members catch the lymphoma?
No. Lymphoma is not passed between people. EBV is very common, and most family members already carry it harmlessly. Normal contact, sharing meals and caring for the patient are safe. Your team may give extra infection advice during chemotherapy.
What should we bring to the first haematology visit?
Bring every biopsy report, the tissue blocks and slides if you can get them, scan reports and films, recent blood tests, and a list of medicines tried for the nose problem. A family member who can help take notes is useful too.
Is treatment covered by Aarogyasri or insurance?
Chemotherapy and radiotherapy for lymphoma are often covered under Aarogyasri, PM-JAY, CGHS, ECHS, EHS or cashless insurance, but some newer drugs may not be. Scheme rules change. Call the helpline with your card details and the team will help you check your current cover.
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Sources
- National Cancer Institute — Adult Non-Hodgkin Lymphoma Treatment (PDQ) - Patient Version
- Leukemia & Lymphoma Society — Non-Hodgkin lymphoma
- Cancer Research UK — Types of non-Hodgkin lymphoma
- American Cancer Society — Non-Hodgkin Lymphoma
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.
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