A Case of Extramedullary Plasmacytoma of Nasal Sinus

Abstract

In general, plasmacytomas are tumors which produce monoclonal globulin. Multiple myeloma, in which punched out of bones, urinary Bence Jones protein, serum M-protein, etc., are recognized, is well known as a kind of plasmacytoma. However, single plasmacytomas of the bone and primary soft tissue plasmacytomas have been reported to occur in rare cases. Extramedullary plasmacytomas include secretory and non-secretory types. Primary plasmacytomas of the upper respiratory tract are frequently of the non-secretory type, and dignosis can often be achieved only by a histopathological examination. Recently, the authors encountered a case of extramedullary plasmacytoma developed in the right nasal cavity, and this was identified as IgA κ type by the enzyme-labeled antibody technique. The details of this case are reported below. together with a review of the literature.