Waldenstrom's macroglobulinemia

Waldenström macroglobulinemia (WM) is cancer involving a subtype of white blood cells called lymphocytes. The main attributing antibody is IgM. It is a type of lymphoproliferative disease, and shares clinical characteristics with the indolent non-Hodgkin lymphomas.It is named after the Swedish physician Jan G. Waldenström (1906-1996), who first identified the condition.
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An indolent (slowly progressing) type of non-Hodgkin's lymphoma marked by abnormal levels of IgM antibodies in the blood and an enlarged liver, spleen, or lymph nodes. Also called lymphoplasmacytic lymphoma.