Waldenström’s macroglobulinemia, also known as lymphoplasmacytic lymphoma, is a type of non-Hodgkin lymphoma in which there’s a clonic proliferation of malignant B-cells, producing excessive amounts of monoclonal IgM antibodies.
Background
- These plasma cells are usually monoclonal and therefore produce monoclonal immunoglobulin referred to as protein M (M as in myeloma) or paraprotein.
- Levels of protein M can be measured:
- From the blood (electrophoresis)
- "M spike" is seen indicating a high level of immunoglobulins
- From the urine (in glomerular damage)
- From the blood (electrophoresis)