患者男性,47岁,双侧鼻塞15年,偶有回缩涕带血6个月,于1991年8月20日入院。无头痛、头晕及发热。全身检查未见异常。鼻咽镜检查可见鼻中隔后缘上方与鼻咽顶交界处有一个山核桃大小的黯红色赘生物,表面光滑,质硬。CT扫描显示犁骨后部有一个上述大小高密度骨性结构,肿块边界清楚,邻近结构正常, Male patient, 47 years old, bilateral nasal obstruction for 15 years, occasional thymectoid bloody 6 months, admitted on August 20, 1991. No headache, dizziness and fever. No abnormalities in the whole body examination. Nasopharyngeal examination revealed nasal septum posterior margin and nasopharyngeal junction at the junction of a dark red walnut-sized vegetation, the surface is smooth, hard. CT scan showed a posterior vomer bone with the above-mentioned high-density bony structure, clear mass boundary, adjacent to the normal structure,