Lymphomas, cancers that begin in lymphatic cells of the immune system, can be divided into 2 main categories: Hodgkin lymphoma and non-Hodgkin lymphoma (NHL). Hodgkin lymphoma is a fairly homogeneous disease characterized by the presence of Reed-Sternberg cells. Hodgkin lymphoma is far less common than NHL—approximately 8000 new Hodgkin lymphoma cases are diagnosed in the United States annually compared with over 70,000 new cases of NHL; more than 60 types of lymphoma are included in the NHL category.1 Presented below are a few facts about various forms of lymphoma.
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