급격한 진행을 보인 역형성 형질세포종 1예

Abstract

Extramedullary plasmacytoma is a rare disease which constitutes less than 5% of all plasma cell neoplasm. The disease most frequently localizes in the upper airways, especially in nasal cavity and nasal sinuses. Diagnosis is made by pathologic findings with immunohistochemical staining and multiple myeloma should be excluded. Extramedullary plasmacytoma is well controlled by radiation therapy and has good prognosis. But we experienced a case of anaplastic extramedullary plasmacytoma which poorly reacts to radiation and has rapid progression.