A 25- year- old young man wıth pericardıal effusion, congestive heart failure, lytic bone lesions and multiple secondary extramedullary plasmacytomas on thoracic castae was diagnosed as having multiple myeloma (MM!. This case is one of the very occassıonal patients younger than aged 30 years to meet modern diagnostic criteria for MM. Besides, cardiac inuolvement and extramedullary plasnıacytomas are both rare di sorders of MM?
Keywords: Multiple myeloma, pericardial effusion, secondary extramedullary plasma cytomas