在浆细胞肿瘤中，髓外浆细胞瘤（EMP）很少见，尚不到1～2％。80％的EMP发生在头颈部，其治疗一般采用放疗。对1972～1993年22年间所收治的25例头颈部EMP患者进行回顾性研究，旨在从病理学方面分析其预后因素，明确放疗剂量效应关系及评价辅助化疗在挽救治疗中的作用。患者诊断 In plasma cell tumours, extramedullary plasmacytoma (EMP) is rare and is still less than 1 to 2%. 80% of EMPs occur in the head and neck, and radiotherapy is generally used for treatment. A retrospective study of 25 patients with head and neck EMPs treated during the 22 years from 1972 to 1993 was conducted to analyze the prognostic factors from the perspective of pathology, clarify the dose-effect relationship of radiotherapy and evaluate the role of adjuvant chemotherapy in salvage therapy. Patient diagnosis