【摘要】 目的　研究嗅神经母细胞瘤的CT、MRI表现。方法　本组经病理证实 9例 ,男 4例 ,女 5例 ,平均年龄 3 4.6岁。CT平扫检查 4例 ;MRI 7例 ,MRI强化 2例。结果　发生于鼻腔 2例 ,鼻筛窦区 7例 ,右侧 6例 ,左侧 3例。CT、MRI表现为破坏性实体性占位 ,CT值 2 9～ 3 6HU ;MRIT1WI高于舌肌均匀信号强度 ,T2 WI稍高于脑灰质信号强度。 9例均有鼻甲、筛窦骨破坏 ,4例侵犯对侧鼻或筛窦 ,侵入颅内 8例 ,额窦 6例 ,同侧眶内 8例 ,2例突眼 ,破坏上颌窦 5例 ,蝶窦 5例。结论　发生于鼻腔、筛窦的破坏性实体肿瘤 ,MRIT2 WI中等均匀信号强度者应诊断本病更多还原

【Abstract】 Objective To study CT and MRI findings of esthesioneuroblastoma.Methods Nine cases of esthesioneuroblastoma proved pathologically were presented.There were four male and five female,with mean age of 34.6 years.CT scan in four cases and MRI in seven cases were done and 2 cases had enhanced MRI.Results The location of lesions were in nasal cavity in 2 cases and in nasoethmoid region in 7 cases.Among nine cases,six cases were seen in the right side,and three cases in the left side.On CT and MRI,the lesion demonstrated a destructive solid mass,CT value ranged 29～36 HU.The lesions appeared as hamogeneous signal intensity which was higher than tongue muscle on T₁WI,and higher than grey matter on MRI T₂WI . Turbinal and ethmoid bony destruction were showed on all nine cases. The lesions invaded into opposite nose and ethmoid sinus in four cases,intruded into intracrainial cavity in eight cases, frontal sinus in six cases, orbit in eight cases in which two cases had eye protrusion, maxillary sinas in five cases and sphenoid sinus in five cases.Conclusion A esthesioneuroblastoma can be considered if a destructive solid mass occurs in nasal cavity and ethmoid sinus,with a middle signal intensity on T₂WI.更多还原