A nonhealing ulcer diagnosed as extramedullary plasmocytoma of the limb eight years after cardiac transplantation.

A 63-year-old man was hospitalized for a nonhealing ulcer of the left lower leg that appeared 8 years after orthotopic cardiac transplantation under immunosuppressive therapy including cyclosporine. Serum protein electrophoresis, immunofixation, and urinalysis revealed a monoclonal gammopathy IgG kappa. The final diagnosis of an extramedullary plasmocytoma was made by biopsy of the ulcer, which showed formations of plasmablastic cells. We report a rare case of extramedullary plasmocytoma as a posttransplantational malignancy.