嗅神经母细胞瘤的CT诊断

目的：探讨CT在嗅神经母细胞瘤诊断中的价值。方法：8例嗅神经母细胞瘤,均经手术和病证实,其中男3例,女5例,均行冠状位和横断位CT扫描,平扫及增强扫描,结果：5例肿瘤位于左侧鼻腔及左侧鼻窦,其中3例侵犯左眼眶,1例累及颅底骨质,3例位于双侧筛窦及鼻腔上部,其中1例侵犯右额叶,平扫肿瘤的CT值为35－44HU,增强后肿块有明显部分。结论：冠状位及横断位CT扫描可清晰地显示肿瘤向周围侵犯的范围,增强扫描有利于鉴别肿瘤组织与窦口堵塞引起的炎症。

CT diagnosis of esthesioneuroblastoma

Objective:To investigate the value of CT diagnosis of esthesioneuroblastoma.Methods:8 cases of esthesioneuroblastoma confirmed by operation and pathology, were performed plain and contrast enhanced CT scanning with transverse and coronal section,including 3 males and 5 females.Results:5 cases of esthesioneuroblastoma were located in the left nasal cavities and paranasal sinuses.Of which 3 cases infiltrated the left orbit,and one invaded the base of the skull.The other 3 cases of esthesioneuroblastoma located in bilateral ethmoid sinuses and the upper nasal cavities,of which one invaded the right frontal lobe of cerebrum.The Hounsfield value of those tumors was from 35 to 40 on plain CT scans, and they were significantly enhanced.Conclusion:CT scans with coronal and transverse section can show clearly the extent of infiltration of esthesioneuroblastoma. Enhanced CT is helpful to differentiate the tumor from the inflammation secondary to sinal obstruction.