Two cases of plasmacytoma in the oral cavity.

Two cases of plasmacytoma in the oral cavity are described. The first case was a plasmacytoma of the palate in a 64-year-old man, which be an oral manifestation of multiple myeloma, with fatal course 17 months after the first examination. The second was a plasmacytoma in a 43-year-old man, manifesting first in the mandible. A review of the recent Japanese dental literature was made: 14 cases were found in the literature exhibiting evidence of plasmacytoma in the oral region. Eight of these patients had oral manifestations of multiple myeloma (IgG myeloma, 3; IgA myeloma, 1; IgD myeloma, 1; B-J myeloma, 1; undetermined, 2). The other six cases were single lesions of plasmacytoma. The ratio of males to females was 1:1. The mandible was more frequently involved than the other oral structures. The site of predilection was the posterior portion of swelling and, less frequently, pain. Surgical treatment was favored in single lesions of plasmacytoma, while in myeloma chemotherapy and a combination of radiotherapy-chemotherapy constituted 75% of treatment.