Solitary plasmacytoma in the maxillary sinus: 10-year follow-up

Abstract

Solitary plasmacytoma (SP) is an uncommon form of plasma cell neoplasm occurring intraosscously or in soft tissue and presents as a single mass of monoclonal plasma cells. SP in the maxillary sinus is rare and can he misdiagnosed as other maxillary sinus tumors. The essential examinations in patients with the initial diagnosis of plasmacytoma arc bone marrow biopsy, scrum and urine electrophoresis, and kappa/lambda ratio (kappa lambda ratio) to rule out multiple myeloma (MM). Herein, a rare case of SP in the maxillary sinus treated by surgery and localized radiation is reported. At the 10-year follow-up examination, local recurrence or disseminated development of MM were not evident.