Extramedullary plasmacytoma of the thyroid: report of a rare case.

Abstract

TO THE EDITOR: Extramedullary or extra-osseous plasmacytomas (EMP/EOP) are localized plasma cell neoplasms that arise in tissues other than bone. EMP comprises 3-5% of all plasma cell neoplasms. The upper respiratory tract and the oral cavity are the most common sites for EMP [1], and the thyroid gland is one of the rare sites for this neoplasm. Here, we report a case of EMP of the thyroid in a 53-year-old male who presented to the surgery outpatient department (OPD) with a left-sided thyroid swelling of six months duration.