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Waldenstrom macroglobulinemia

A lymphoproliferative disorder characterized by pleomorphic B-LYMPHOCYTES including PLASMA CELLS, with increased levels of monoclonal serum IMMUNOGLOBULIN M. There is lymphoplasmacytic cells infiltration into bone marrow and often other tissues, also known as lymphoplasmacytic lymphoma. Clinical features include ANEMIA; HEMORRHAGES; and hyperviscosity. [from MeSH]

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Neoplastic Process

Waldenstrom macroglobulinemia

Waldenstrom macroglobulinemia (WM) is a malignant B-cell neoplasm characterized by lymphoplasmacytic infiltration of the bone marrow and hypersecretion of monoclonal immunoglobulin M (IgM) protein (review by Vijay and Gertz, 2007). The importance of genetic factors is suggested by the observation of familial clustering of WM (McMaster, 2003). Whereas WM is rare, an asymptomatic elevation of monoclonal IgM protein, termed 'IgM monoclonal gammopathy of undetermined significance' (IgM MGUS) is more common. Patients with IgM MGUS can progress to develop WM, at the rate of 1.5% to 2% per year (Kyle et al., 2003). Genetic Heterogeneity of Waldenstrom Macroglobulinemia One locus for susceptibility to Waldenstrom macroglobulinemia (WM1) maps to chromosome 6p21.3. Another locus (WM2; 610430) maps to chromosome 4q. [from OMIM]

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Disease or Syndrome

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