lymphoma
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- lymphomasearch for term
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Cancer that begins in cells of the immune system. There are two basic categories of lymphomas. One kind is Hodgekin lymphoma, which is marked by the presence of a type of cell called Reed-Sternberg cell. The other category in non-Hodgkin lymphomas, which includes a large, diverse group of cancers of immune system cells. Non-Hodgkin lymphomas can be further divided into cancers that have an indolent (slow-growing) course and those that have an aggressive (fast-growing) course. These subtypes behave and respond to treatment differently. Both Hodgkin and non-Hodgkin lymphomas can occur in children and adults, and prognosis and treatment depend on the stage and the type of cancer.
