鼻腔及副鼻窦小细胞肿瘤约占该类疾病的4％。光学显微镜下皆以低分化或未分化肿瘤做出诊断,本文通过对鼻腔及副鼻窦小细胞肿瘤在电子显微镜下特征的研究,总结出常见的几种肿瘤类型,从超微结构对该类疾病做出准确诊断,为该病的进一步治疗提供有力的依据。 Nasal and paraneoplastic small cell tumors account for about 4% of these diseases. Light microscopy are poorly differentiated or undifferentiated tumor diagnosis, this article through the nasal cavity and paraneoplastic small cell tumor under electron microscopy features, summed up several common tumor types, from the ultrastructure of these diseases Make an accurate diagnosis, to provide a strong basis for the further treatment of the disease.