髓外浆细胞瘤 (extramedullaryplasmacytoma ,EMP)是一种少见肿瘤 ,在浆细胞恶性肿瘤中不足 4 % 〔1〕。自 190 5年Schridde〔2〕首次报道并描述以来 ,国内外屡有报道。但以形态描述和临床病理回顾性研究为主。近年来 ,随着免疫组织化学染色和分子生物学技术的应用 ,EMP的研究 Extramedullary plasmacytoma (EMP) is a rare tumor with less than 4% of plasma cell malignancies [1]. Since the first report and description by Schridde [2] in 1905, it has been repeatedly reported at home and abroad. However, the main morphological description and clinical pathological retrospective study. In recent years, with the application of immunohistochemical staining and molecular biology techniques, EMP research