What Is Non-Hodgkin's Lymphoma?

Do you feel a strange swelling in your neck, armpit, or groin? If so, there is a chance you may have non-Hodgkin’s lymphoma.

Non-Hodgkin's lymphoma is a cancer of the lymphatic system that affects white blood cells. It is given different names depending on the type and severity. 

Keep reading to find out more about non-Hodgkin’s lymphoma, its types, stages, symptoms, and how it is diagnosed and managed. 


Non-Hodgkin lymphoma is a type of cancer that affects the lymphatic system, a series of tubes, and small organs called lymph nodes that are part of your immune system.

In non-Hodgkin lymphoma, a type of white blood cell called lymphocytes starts to grow abnormally, accumulating in parts of your lymphatic system such as the lymph nodes.1,2

While not the most frequent cancer, non-Hodgkin lymphoma is relatively common, comprising 1 in every 25 new cancer cases each year. 

Most cases of non-Hodgkin lymphoma are considered very treatable and are managed with common cancer therapies such as chemotherapy and radiotherapy. 

Types of non-Hodgkin's lymphoma

There are more than 60 types of non-Hodgkin’s lymphoma based on what cells are affected, how they look, and how fast the cancer spreads.1,2

Non-Hodgkin lymphoma can affect two types of lymphocytes:

  • B cells: most common, about 9 of 10 are B-cell lymphomas
  • T cells and natural killer (NK) cells: less common, about 1 in 10 are either T-cell or NK cell lymphomas 

B-cell lymphomas

Depending on how fast the cancer spreads, B-cell lymphomas are further classified into indolent lymphomas and aggressive lymphomas.

Indolent lymphomas, also known as low-grade, grow slowly. The most common are:

When the lymphoma grows faster, they are known as aggressive, or high-grade, lymphomas. The most common aggressive B-cell lymphomas are:

T-cell lymphomas

Non-Hodgkin lymphomas can also affect T cells. Depending on whether they originated in the skin or not they are subcategorised into either primary cutaneous or systemic.

Types of T-cell lymphomas include:

Stages of non-Hodgkin's lymphoma

Following your diagnosis, your doctor will then determine the stage of your condition. This is to define how serious it is and the best way to treat it.1 The stages are as below:

  • Stage I: only one lymph node group or organ outside the lymphatic system is affected
  • Stage II: two or more lymph node groups on the same side of the diaphragm are affected
  • Stage III: lymph node groups on both sides of the diaphragm are affected or affect lymph nodes above the diaphragm and the spleen
  • Stage IV: the lymphoma has spread to one or more organs such as the lung, bone marrow, or liver

If your non-Hodgkin lymphoma affects the blood or bone marrow, your doctor may use the stages of chronic lymphocytic leukaemia (CLL) to describe the severity. 

Causes of non-Hodgkin's lymphoma

Like other cancers, non-Hodgkin lymphoma is caused by changes in the genetic material of cells, specifically white blood cells known as lymphocytes.3,5 As a result, the cells grow uncontrollably, eventually affecting your lymph nodes and potentially other parts of the body. 

Signs and symptoms of non-Hodgkin's lymphoma

The most common sign of non-Hodgkin’s lymphoma is a swollen lymph node, usually with no pain. It is usually found in the neck, armpit, or groin.1,4 

Other symptoms may include:

  • Chills
  • Weight loss
  • Fatigue
  • Swollen abdomen
  • Loss of appetite
  • Chest pain
  • Breathlessness 
  • Coughing
  • Frequent, severe infections
  • Bruising or bleeding easily

Management and treatment for non-Hodgkin's lymphoma

The treatment you are given may depend on your type of non-Hodgkin lymphoma and how severe it is. If your lymphoma is low grade (indolent) and you feel well, your doctor may instead opt for “watching and waiting” as it may be years until you have symptoms that significantly affect your quality of life.6,8

The most common treatments for non-Hodgkin lymphoma are:

  • Chemotherapy uses a combination of medicines to kill cancer cells. Your treatment may consist of only chemotherapy or also include radiotherapy or monoclonal antibody therapy
  • Radiotherapy is usually given for early-stage lymphoma that is limited to one part of the body
  • Monoclonal antibody therapy may be a treatment option in combination with chemotherapy depending on your type of non-Hodgkin lymphoma. A common treatment is the antibody rituximab
  • Steroids are often given in combination with chemotherapy to make it more effective

Following treatment, you will have regular appointments with our doctor to check on your recovery and look for signs that the cancer is coming back. At first, you may be asked to come in every few weeks or months but your check-ups will become less frequent over time. 

Diagnosis of non-Hodgkin's lymphoma

If following a physical examination your doctor suspects you have non-Hodgkin lymphoma, you may be referred to a hospital for a biopsy. This involves taking a small sample of tissue to be studied in the laboratory.6

If you test positive for non-Hodgkin’s lymphoma, you may be asked to undergo further tests to determine the severity, stage, and spread. This may include:

Risk factors

Some factors may contribute to your risk of developing non-Hodgkin lymphoma.1,2 These are known as risk factors. They include: 


How can I prevent non-Hodgkin's lymphoma?

There is no known way to prevent non-Hodgkin’s lymphoma, though you may lower your chances by reducing your risk of certain infections and maintaining a healthy immune system. Following a healthy lifestyle such as being physically active and following a healthy diet may also decrease your risk of developing non-Hodgkin lymphoma. 

How common is non-Hodgkin's lymphoma?

Non-Hodgkin’s lymphoma is the sixth most common cancer in the UK, with around 22 in every 100,000 people being diagnosed each year. Non-Hodgkin’s lymphoma is slightly more common in people assigned male at birth (AMAB) than assigned female at birth (AFAB).7

When should I see a doctor?

If you have noticed a painless swelling in your neck, armpit, or groin, or any other symptoms such as fatigue, chest pain, or breathlessness, please see a doctor. Though it may not be non-Hodgkin lymphoma, it is important that you get a diagnosis for your symptoms so they may be promptly addressed and the risk of complications is reduced. 


Non-Hodgkin lymphoma is a type of cancer that affects the lymphatic system. It is a diverse, complex condition that can cause a wide variety of symptoms. Due to this, your response to treatment may vary, though the outcome is often positive. Being diagnosed with cancer can be a difficult experience. Please be aware that you can seek additional help and support from organisations such as Lymphoma Action and Leukemia & Lymphoma Society.


  1. Singh R, Shaik S, Negi BS, Rajguru JP, Patil PB, Parihar AS, et al. Non-Hodgkin’s lymphoma: A review. J Family Med Prim Care [Internet]. 2020 Apr 30 [cited 2023 Oct 31];9(4):1834–40. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7346945/
  2. Sapkota S, Shaikh H. Non-hodgkin lymphoma. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 [cited 2023 Oct 31]. Available from: http://www.ncbi.nlm.nih.gov/books/NBK559328/
  3. Thandra KC, Barsouk A, Saginala K, Padala SA, Barsouk A, Rawla P. Epidemiology of non-hodgkin’s lymphoma. Medical Sciences [Internet]. 2021 Mar [cited 2023 Oct 31];9(1):5. Available from: https://www.mdpi.com/2076-3271/9/1/5
  4. Shephard EA, Neal RD, Rose PW, Walter FM, Hamilton WT. Quantifying the risk of non-Hodgkin lymphoma in symptomatic primary care patients aged ≥40 years: a large case–control study using electronic records. Br J Gen Pract [Internet]. 2015 May 1 [cited 2023 Oct 31];65(634):e281–8. Available from: https://bjgp.org/content/65/634/e281
  5. Luo J, Craver A, Bahl K, Stepniak L, Moore K, King J, et al. Etiology of non-Hodgkin lymphoma: A review from epidemiologic studies. Journal of the National Cancer Center [Internet]. 2022 Dec 1 [cited 2023 Oct 31];2(4):226–34. Available from: https://www.sciencedirect.com/science/article/pii/S2667005422000576
  6. Derebas J, Panuciak K, Margas M, Zawitkowska J, Lejman M. The new treatment methods for non-hodgkin lymphoma in pediatric patients. Cancers [Internet]. 2022 Jan [cited 2023 Oct 31];14(6):1569. Available from: https://www.mdpi.com/2072-6694/14/6/1569
  7. Mafra A, Laversanne M, Gospodarowicz M, Klinger P, De Paula Silva N, Piñeros M, et al. Global patterns of non‐Hodgkin lymphoma in 2020. Intl Journal of Cancer [Internet]. 2022 Nov [cited 2023 Oct 31];151(9):1474–81. Available from: https://onlinelibrary.wiley.com/doi/10.1002/ijc.34163
  8. Marginean CO, Melit LE, Horvath E, Gozar H, Chincesan MI. Non-Hodgkin lymphoma, diagnostic, and prognostic particularities in children – a series of case reports and a review of the literature (CARE compliant). Medicine [Internet]. 2018 Feb [cited 2023 Oct 31];97(8):e9802. Available from: https://journals.lww.com/md-journal/Fulltext/2018/02230/Non_Hodgkin_lymphoma,_diagnostic,_and_prognostic.28.aspx
This content is purely informational and isn’t medical guidance. It shouldn’t replace professional medical counsel. Always consult your physician regarding treatment risks and benefits. See our editorial standards for more details.

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Jose Jerez Pombo

Bachelor of Science - BSc, Biochemistry, King's College London logo

José has worked in the field of health and healthcare in a variety of settings ranging from international organisations and NGOs to CROs. He is currently an advisor at the Copenhagen Institute for Futures Studies (CIFS), participating in a wide variety of projects that seek to promote sustainable, equitable, and effective health systems and foster responsible and effective innovation in the health sector. José’s background is in biomedical science (specifically biochemistry) and global health.

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