B Cell Lymphoma: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats B Cell Lymphoma?
A hematologist-oncologist, a doctor who treats blood cancers, cares for people with B cell lymphoma. Some patients also see a radiation oncologist for radiation treatment. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is B cell lymphoma?
B cell lymphoma is a cancer that starts in white blood cells called B lymphocytes, or B cells. Most lymphomas, cancers of the lymph system, start in B cells. The lymph system is part of the immune system. Lymph tissue is found in the lymph nodes, the spleen, and other organs of the immune system.
Most lymphomas are called non-Hodgkin lymphoma (NHL). Some types grow slowly and others grow fast. The abnormal cells can divide again and again and spread to almost any part of the body.
Symptoms
Symptoms depend on the part of the body affected and how fast the cancer grows. They may include:
- Swollen, painless lymph nodes in the neck, underarms, or groin.
- Fever and chills that come and go.
- Soaking night sweats.
- Unexplained weight loss.
- Fatigue, meaning tiredness that does not go away.
- Itching.
- Coughing, trouble breathing, or chest pain.
- Abdominal pain or swelling, which can cause loss of appetite, nausea, or vomiting.
Causes and who gets it
For most people, the cause is unknown. But lymphomas may develop in people with weakened immune systems. This includes people who have had an organ transplant or people with HIV infection or Epstein-Barr virus infection. Having certain types of infections also raises the risk.
NHL most often affects adults, and men get it more often than women. Children can develop some forms of it.
How doctors diagnose it
Your provider will do a physical exam and feel areas with lymph nodes to check for swelling. The disease is usually diagnosed with a biopsy, which removes a sample of tissue, often from a lymph node, so it can be checked for cancer cells. Other tests may include:
- Blood tests to check protein levels, liver and kidney function, and blood counts.
- CT scans, which are detailed X-ray pictures of the chest, abdomen, and pelvis.
- A PET scan, an imaging test that shows areas of active cancer.
- A bone marrow biopsy, which checks the soft tissue inside bones where blood cells are made.
If cancer is found, more tests show how far it has spread. This is called staging, and it helps guide treatment.
Treatment
Treatment depends on the type of lymphoma, the stage when diagnosed, your age and overall health, and symptoms. You may receive chemotherapy, radiation therapy, or both. Some slow-growing types may not need treatment right away. This is called watchful waiting.
Other options include targeted therapy, which uses drugs that attack specific targets on cancer cells, and radioimmunotherapy, which links a radioactive substance to an antibody that targets cancer cells. High-dose chemotherapy may be followed by a stem cell transplant that rebuilds the bone marrow. CAR T cell therapy, a form of immunotherapy that uses the body's own immune cells, can be used if lymphoma comes back or does not respond to other treatments. Surgery is an option for some types.
Chemotherapy may cure many types of fast-growing lymphomas.
When to see a doctor
Contact your provider if you develop symptoms such as swollen lymph nodes, night sweats, unexplained weight loss, or lasting fatigue. If you have NHL, contact your provider if you have a persistent fever or other signs of infection. Call 911 or go to the emergency room if you have trouble breathing, chest pain or discomfort lasting two minutes or more, fainting, or bleeding that will not stop.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can do a first evaluation, check swollen lymph nodes, and refer you quickly to a specialist. They can also follow your overall health during cancer treatment and help manage follow-up care.
Common questions
Is B cell lymphoma the same as non-Hodgkin lymphoma?
Not exactly. Most non-Hodgkin lymphomas start in B cells, so the terms overlap. B cell lymphoma names the cell type the cancer starts in, while non-Hodgkin lymphoma names the whole group of lymphomas that are not Hodgkin lymphoma.
Can B cell lymphoma be cured?
It depends on the type. Chemotherapy may cure many types of fast-growing, or high-grade, lymphomas. Slow-growing types often cannot be cured by chemotherapy alone, but they may progress slowly for many years and can often be controlled.
What is watchful waiting?
If you do not have symptoms, you may not need treatment right away. Your doctor monitors the cancer closely and starts treatment when needed. This approach is used for some slow-growing lymphomas.
What is CAR T cell therapy?
It is a form of immunotherapy, a treatment that uses the body's own immune cells to fight cancer. It can be used if lymphoma comes back or does not respond to other treatments.
Sources
- MedlinePlus - Non-Hodgkin lymphoma
- MedlinePlus - Lymphoma | Hodgkins Lymphoma | Non Hodgkins Lymphoma
- National Cancer Institute - Lymphoma Patient Version
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
