Plasmacytoid lymphomas may be associated with an increase in: (A) IgG, (B) IgM, (C) IgA, (D) IgE
Answer is B. *Lymphoplasmacytic lymphomas are otherwise called as plasmacytoid lymphomas or immunocytomas. *It is a mature B cell neoplasm of older adults (60-70years)*Bone marrow shows small lymphoid cells and admixed plasma cells*These plasma cells secrete monoclonal IgM*IgM can cause a hyperviscosity syndrome called Waldenstrom&;s macroglobulinemia.(Ref: Robbins 8/e p612)