Primary Extramedullary Plasmacytoma of Maxillary Sinus

Abstract

A rare case of extramedullary plasmacytoma of maxillary sinus in a 58-year-old man presenting with right-sided nasal obstruction and intermittent blood tinged nasal crusting. Nasal endoscopy revealed that a dark red colored mass arising from the lateral wall of nose. A biopsy specimen was diagnosed as plasmacytoma (Kappa light chain type). Serum and urine electrophoresis failed to detect any myeloma component or Bence-Jones protein. All other screening tests to rule out multiple myeloma were negative. These findings confirmed the diagnosis of extramedullary plasmacytoma. The mass was completely excised by lateral rhinotomy approach. No recurrence has been noted at the end of 6 months follow-up.