颈动脉体瘤的CT、MRI诊断

CT and MRI Findings of the Carotid Body Tumor

目的分析颈动脉体瘤的CT和MRI表现。资料与方法经手术证实的颈动脉体瘤7例,7例均行CT平扫,其中5例行CT增强扫描;3例行MRI平扫,其中2例行MRI增强扫描。结果7例病变均为单发。7例均位于颈动脉分叉水平,颈动脉分叉扩大。CT平扫病变均呈等密度。MRI示T1WI呈等信号1例,略高信号2例,T2WI为不均匀高信号,内可见血管流空,肿瘤边缘清晰;增强后显示所有病变明显强化。结论CT和MRI可对颈动脉体瘤作出明确诊断。

Objective To analyze CT and MRI findings of the Carotid body tumor. Materials and Methods CT and MRI were performed in 7 cases with the carotid body tumor confirmed by surgery. Results Solitary lesion was observed in 7 cases with the carotid body tumor, which located at the bifurcation of carotid artery and showed enlargement of the bifurcation. CT displayed a homogeneous isedense mass. On T1-weighted images, one case showed isointense signal and two cases demonstrated slightly high signal. T2-weighted images revealed a well-defined heterogeneous tumor with flow void of vessels in the tumor. After contrast administration, marked enhancement was identified in all 7 patients. Conclusion CT and MRI could be available in the diagnosis of the carotid body tumor.