Causes of paraproteinemia include the following: * Leukemias and lymphomas of various types, but usually B-cell non-Hodgkin lymphomas with a plasma cell component. * Myeloma * Plasmacytoma * Lymphoplasmacytic lymphoma * Idiopathic (no discernible cause): some of these will be revealed as leukemias or lymphomas over the years. * AL amyloidosis
Monoclonal gammopathy
AL amyloidosis
AA amyloidosis
Secondary systemic amyloidosis
Heavy chain disease
Organ-limited amyloidosis
Macroglobulinemia
Multisystem proteinopathy