[Simultaneous presentation of multiple myeloma and sarcoidosis].

The association between sarcoidosis and neoplasms has been described by different authors. Hodgkin's disease and non Hodgkin lymphoma are the neoplasms associated frequently with sarcoid reaction. However, the simultaneous appearance of multiple myeloma disease and sarcoidosis is very infrequent because only eleven cases have been described. The case of a 49 year old patient with simultaneous appearance of smoldering myeloma and sarcoidosis is presented. The smoldering myeloma had an aggressive evolution to multiple myeloma. The role that sarcoidosis may play in the genesis of multiple myeloma is discussed.