Non-Hodgkin lymphoma (NHL) is a group of blood cancers that begin in lymphocytes (white blood cells that are part of your immune system). NHLs can be indolent (slow-growing) or aggressive (fast-growing) and arise from B cells, T cells, or (less commonly) NK cells. Your exact subtype and stage guide testing, treatment, and follow-up.
Understanding the Lymph System
Lymphomas start in the body’s lymphatic system (lymph nodes, lymph vessels, spleen, thymus, tonsils/adenoids, bone marrow, and other lymph tissues). Because lymph tissue exists throughout the body, NHL can arise in many places and sometimes in organs outside lymph nodes (extranodal sites).
Common NHL Subtypes
Diffuse large B-cell lymphoma (DLBCL)
Follicular lymphoma (FL)
Marginal zone lymphomas (e.g., MALT) and mantle cell lymphoma (MCL).
Chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL).
T-cell lymphomas (e.g., peripheral T-cell lymphoma, anaplastic large cell lymphoma).
Signs & Symptoms
Symptoms vary by subtype and site, but may include:
If symptoms persist or worsen, schedule an evaluation—especially if you have risk factors.
Risk Factors
Risk varies by subtype. Factors linked with increased risk include older age, male sex, weakened immunity (e.g., HIV, post-transplant), and certain infections (e.g., H. pylori for some MALT lymphomas; HTLV1 for specific T-cell lymphomas; EBV in select settings). Most people with these risks do not develop NHL.
Diagnosis
NHL diagnosis relies on tissue review and specialized testing:
Staging
NHL in adults is staged using the Lugano classification (a modern update of Ann Arbor). Stages I–IV describe how widely lymphoma has spread, with suffixes such as E (extranodal) and special notes for bulky disease. Accurate staging helps match treatment intensity to your situation.
Treatment Options
Treatment is individualized based on subtype, stage/bulk, symptoms, molecular features, overall health, and your goals.
Indolent NHL (e.g., Follicular Lymphoma, Some Marginal Zone Lymphomas)
Aggressive NHL (e.g., DLBCL, High grade B-cell Lymphomas)
Combination chemoimmunotherapy (e.g., regimens built around an antiCD20 antibody and chemotherapy) is standard for many first-line settings; radiation may be added in specific cases.
Relapsed/Refractory Disease & Innovative Therapies
Because there are many NHL subtypes and the field evolves quickly, clinical trials are often recommended at various decision points. They can provide access to promising therapies and help answer important questions about sequencing and combinations.
Prognosis
Outlook depends on the exact subtype, stage/bulk, tumor biology, response to therapy, and overall health. Many aggressive NHLs (such as DLBCL) are curable with modern first-line therapy, while most indolent NHLs are highly treatable and often managed over time with excellent disease control. Your physician will explain what your features mean for you.
Follow-Up & Survivorship
After treatment (or during active surveillance), follow-up typically includes:
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Sources & Patient Friendly References
All information was taken from the NCI (National Cancer Institute) and ACS (American Cancer Society).