髓外浆细胞瘤(extramedullary plasmacytoma,EMP)是指原发于骨髓造血组织以外的浆细胞肿瘤,临床上较为少见,仅占浆细胞肿瘤性疾病的4%左右,由于病例少,临床表现及影像学检查缺乏特异性,发生于鼻窦的EMP易被误诊。我院曾在2002年10月收治上颌窦髓外浆细胞瘤伴异位牙1例,予以手术 Extramedullary plasmacytoma (extramedullary plasmacytoma, EMP) is a plasma cell tumor outside of the primary bone marrow hematopoietic tissue, relatively rare clinical, accounting for about 4% of plasma cell neoplastic disease, due to fewer cases, clinical manifestations and imaging Lack of specificity of the study, the EMP in the sinuses can easily be misdiagnosed. In our hospital in October 2002 admitted maxillofacial pulp plasmacytoma with ectopic teeth in 1 case, to be operated