Multiple myeloma is usually restricted to bone marrow, but extramedullary involvement can occur in the form of plasmacytomas. Several cases of multiple myeloma which developed into mutiple extramedullary involvements have been reported. We report a case of extramedullary plasmacytomas of posterior mediastinum, and gingiva, which developed in the course of mutiple myeloma in a 57-year-old man. The patient progressed to fulminant hepatic failure resulting in rapid fatal outcome.
Bone Marrow ; Fatal Outcome ; Gingiva* ; Humans ; Liver Failure ; Liver Failure, Acute* ; Mediastinum* ; Middle Aged ; Multiple Myeloma* ; Plasmacytoma*