CD40LG and hyperlipidemia: In this case report, the patient has lymphoplasmacytic lymphoma/Waldenström macroglobulinemia (LPL/WM), that is usually accompanied by an increase in serum monoclonal IgM gamma globulin.[7] No obvious abnormality was found during the preliminary examination of the patient at the hospital; however, the serum lipemia index was not consistent with the appearance of the sample, therefore, further examination was required to determine this discrepancy.