颈动脉体瘤的综合影像诊断

Comprehensive Imaging Diagnosis of Carotid Body Tumors

目的:评价颈动脉体瘤(CBT)的综合影像诊断价值。方法:回顾性分析24例CBT患者超声、MSCT、MRI和DSA检查资料,其中18行MSCTA检查、16例行MRI和MRA检查。结果:超声、MSCT、MRI和DSA检查均可显示肿瘤位置、大小及形态,所有颈动脉体瘤均位于颈动脉分叉处,21例为单侧,3例为双侧,共27个瘤体,平均直径(5.0±2.3)cm,其影像学特征为瘤体位于颈总动脉分叉处并与其紧密相连,呈单发肿块,瘤体内血供丰富,瘤体使颈外动脉向前内移位、颈内动脉向后外移位,颈内外动脉分叉角度明显增大,在MSCTA、MRA及DSA上呈"金杯"征。超声、MSCT、MRI和DSA的诊断准确率分别是87.5%、95.8%,100%和100%。结论:超声、CT、MRI及DSA在CBT的诊断中均有其各自的特点,临床上应根据其检查目的选择合适的检查方法。

Purpose：To evaluate the value of combined imaging examinations in diagnosis of carotid body tumor （CBT）.Methods：Retrospective analysis of 24 CBT cases with ultrasonography,CT,MRI and DSA were undergone in our study,MSCTA was done in 18 cases,MRI and MRA in 16.Results：The imaging examinations including ultrasonography,CT,MRI and DSA could display the location,size and form of the tumor well. All tumors were located in bifurcation of the carotid artery; 21 were unilateral（10 located at right neck,11 located at left neck）; 3 cases were in bilateral neck. The mean diameter was 5.0±2.3 centimeters. The imaging features of 24 patients with CBT were：location of the lesion was at the bifurcation of carotid artery; Blood supply in the tumor was abundant;Internal and external carotid arteries were shifted;The bifurcation of carotid artery was increased and showed ＂Gold cup＂ in CTA,MRA and DSA. The diagnostic accuracy of ultrasonography,CT,DSA and MR was 87.5%,95.8 %,100%and 100%,respectively. Conclusion：The combined imaging exams have definitely characteristic value in diagnosing CBT. All of them play important roles on the diagnosis of CBT,and different techniques are carried out according to the purpose.