상악동에 발생한 골수외 형질세포종 1예

Extramedullary plasmacytoma is a neoplastic proliferation of plasmacytes in reticuloendothelial tissue. The most frequently involved sites of extramedullary plasmacytoma are head and neck regions, especially in the upper respiratory tract and the oral cavity although it accounts for less than 1% of all head and neck malignancy. The diagnosis is based on immunophenotypical finding of monoclonal plasma cells and the exact diagnosis is difficult. Recently we experienced an extramedullary plasmacytoma of the maxillary sinus in a 62 year-old male patient and report with literature review. (J Clinical Otolaryngol 2013;24:100–104)