Non-hodgkin-s-lymphoma definitions

nŏn'hŏj'kĭnz
The definition of non-Hodgkin's lymphoma is a type of cancer that develops in the lymphatic system of the body.
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Stage I: Lymphomas present in a single lymphatic site (i.e., spleen, lymph node) OR, in rare cases, in a single non-lymphatic site or organ. Stage II: Two or more lymph nodes on the same side of the diaphragm are involved or a single region of lymph nodes affected along with a single non-lymphatic organ. Stage III: Lymphatic regions on both sides of the diaphragm are affected. This stage can also be accompanied by lymph node involvement outside the main concentration and/or the spleen. Stage IV: Spread out of cancers of one or more non-lymphatic organs with or without lymph node region involvement or tumors isolated to a single non-lymphatic organ but including additional diseases in other places such as the liver, bone marrow or cerebrospinal fluid.

An example of non-Hodgkin's lymphoma is cancer in the spleen.

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Any of various malignant lymphomas characterized by the absence of Reed-Sternberg cells and producing symptoms similar to those of Hodgkin's disease.
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Any of various types of lymphoma distinguished from Hodgkin's disease by the lack of a certain kind of malignant cell.
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