Which is not a minor diagnostic criteria for multiple myeloma?: (A) Lytic bone lesions, (B) Plasmacytosis greater than 20%, (C) Plasmacytoma on biopsy, (D) Monoclonal globulin spike on serum melectrophoresis of >2.5 G/DL for IgG,>1.5 G/DL for IGA)
Answer is C. . Plasmacytoma on biopsy