<prompt>  Ramesh 60 years, presents with generalized bone pain. On examination there is elevated ESR of 100 mm, serum globulin 7, lytic lesions in the skull, serum creatinine of 3.5 mgdL and serum calcium of 11mgdL. What is the most likely diagnosis -Waldenstroms macroglobulinemiaMultiple myelomaHyperparathyroidismOsteomalacia 