Abstract
Medullary plasmacytoma (MP) or osseous or solitary bone plasmacytoma is a specializing hematopathology lesion typically present with local symptoms, such as pain, paresthesia and pathologic bone fractures as a result of proliferation of plasma cells. The most often involved sites are active hematopoietic long bones and the vertebrae. The clinical course of disease is identical to spectrum of other plasma cell dyscrasias. The diagnostic criteria include punched-out radiolucencies, monoclonal plasma cells and M protein. This lesion should be considered for the differential diagnosis of bone tumors. It is highly radiosensitive although combination modalities of radiation, surgery and chemotherapy have been used in the treatment. The long-term follow-up is essential. We report two rare cases of oral MP with unusual clinical presentation.