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lymphoplasmacytic lymphoma


Definition: lymphoplasmacytic lymphoma/Waldenström macroglobulinemia is characterized by the presence of a diffuse proliferation of small mature B lymphocytes, plasmacytoid lymphocytes, and plasma cells; the cells show surface Ig (usually IgM), B-cell-associated antigens, and are CD23 and CD10 negative. The t(9;14) chromosomal translocation has been found in 50% of all lymphoplasmacytic lymphoma cases. Clinical course is usually indolent, but may be associated with hyperviscosity syndrome due to excess IgM in the blood.

Synonym(s): immunocytoma

See Also: Waldenström macroglobulinemia

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.