Current Thoracic Surgery

Plasmacytomas are localized proliferations of plasma cells in bone marrow. Extraosseous tissue involvement is uncommon. Herein, we report a case of mediastinal extramedullary plasmacytoma in a 54-year-old woman. A 85 mm lesion was reported in computed chest tomography of the patient who referred to ourvhospital with dyspnea. Since interventional radiologists did not think the patient was suitable for percutaneous biopsy, a surgical biopsy was performed and the pathology reported a plasmacytoma. Various investigations were done to rule out multiple myeloma. Since no result in favor of multiple myeloma was obtained, mass was diagnosed as extramedullary plasmacytoma. Radiotherapy was scheduled for the patient.