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Lymphomas are either Hodgkin's lymphomas or non-Hodgkin's lymphomas. Hodgkin's lymphomas have a type of cell called Reed-Sternberg cells. Lymphomas without these cells are non-Hodgkin's lymphomas. This topic is about non-Hodgkin's lymphoma (NHL). To learn about Hodgkin's lymphoma, see the topic Hodgkin's Lymphoma.
What is non-Hodgkin's lymphoma?
Lymphoma is cancer that begins
in the lymph system in white blood cells called lymphocytes. When these cells become abnormal, they
don't protect the body from infection or disease. They also grow without control and may form lumps
of tissue called tumors.