Coexistence of cervical extramedullary plasmacytoma and squamous cell carcinoma: A case report.

Background: Extramedullary plasmacytoma (EMP), a variant form of myeloma, is a rare solid plasma cell tumor that originates from the bone marrow hematopoietic tissue and accounts for about 3% of all plasma cell tumors. EMP can affect various tissues and organs, about 90% of which is found in the head and neck. However, EMP in the reproductive organs is rare, and is difficult to be distinguished from other primary or metastatic genital tumors according to clinical symptoms and imaging findings.