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Non-Hodgkin lymphoma (NHL) is cancer of the lymph tissue. Lymph tissue is found in the lymph nodes, spleen, and other organs of the immune system.
White blood cells called lymphocytes are found in lymph tissue. They help prevent infections. Most lymphomas start in a type of white blood cell called the B lymphocyte, or B cell.
Lymphoma - non-Hodgkin; Lymphocytic lymphoma; Histiocytic lymphoma; Lymphoblastic lymphoma; Cancer - non-Hodgkin lymphoma
For most patients, the cause of NHL is unknown. But lymphomas may develop in people with weakened immune systems, including persons who have had an organ transplant or persons with HIV infection.
NHL most often affects adults. Men develop NHL more often than women. Children can also develop some forms of NHL.
There are many types of NHL. One classification (grouping) is by how fast the cancer spreads. The cancer may be low grade (slow growing), intermediate grade, or high grade (fast growing).
NHL is further grouped by how the cells look under the microscope, what type of white blood cell it originates from, and whether there are certain DNA changes in the tumor cells themselves.
Symptoms depend on what area of the body is affected by the cancer and how fast the cancer is growing.
Symptoms may include:
The doctor will perform a physical exam and check body areas with lymph nodes to feel if they are swollen.
The disease may be diagnosed after biopsy of suspected tissue, usually a lymph node biopsy.
Other tests that may be done include:
If tests show you have NHL, more tests will be done to see how far it has spread. This is called staging. Staging helps guide future treatment and follow-up.
Treatment depends on:
Radioimmunotherapy may be used in some cases. This involves linking a radioactive substance to an antibody that targets the cancerous cells and injecting the substance into the body.
High-dose chemotherapy may be given when NHL returns after treatment or does not respond to the first treatment. This is followed by an autologous stem cell transplant (using your own stem cells) to rescue the bone marrow after the high-dose chemotherapy. With certain types of NHL, these treatment steps are used at first remission to try and achieve a cure.
Blood transfusions or platelet transfusions may be required if blood counts are low.
You can ease the stress of illness by joining a cancer support group. Sharing with others who have common experiences and problems can help you not feel alone.
Low-grade NHL usually cannot be cured by chemotherapy alone. Low-grade NHL progresses slowly and it may take many years before the disease gets worse or even requires treatment. The need for treatment is usually determined by symptoms, how fast the disease is worsening, and if blood counts are low.
Chemotherapy can often cure many types of high-grade lymphomas. If the cancer does not respond to chemotherapy, the disease can cause rapid death.
NHL itself and its treatments can lead to health problems. These include:
Keep following up with a doctor who knows about monitoring and preventing these complications.
Call your health care provider if you develop symptoms of this disorder.
If you have NHL, call your health care provider if you experience persistent fever or other signs of infection.
National Cancer Institute: PDQ Adult Non-Hodgkin Lymphoma Treatment. Bethesda, Md: National Cancer Institute. Date last modified Feb. 28, 2014. Available at http://www.cancer.gov/cancertopics/pdq/treatment/adult-non-hodgkins/HealthProfessional. Accessed: March 23, 2014.
National Cancer Institute: PDQ Childhood Non-Hodgkin Lymphoma Treatment. Bethesda, Md: National Cancer Institute. Date last modified: Aug. 9, 2013. Available at http://cancer.gov/cancertopics/pdq/treatment/child-non-hodgkins/HealthProfessional. Accessed: March 23, 2014.
National Comprehensive Cancer Network. NCCN Clinical Practice Guidelines in Oncology: Non-Hodgkin's Lymphomas. Version 2.2014. Available at: http://www.nccn.org/professionals/physician_gls/pdf/nhl.pdf. Accessed: March 23, 2014.
Wilson WH, Armitage JO. Non-Hodgkin's lymphoma. In: Abeloff MD, Armitage JO, Niederhuber JE, et al., eds. Clinical Oncology. 4th ed. Philadelphia, Pa: Elsevier Churchill-Livingstone; 2008:chap 112.