颈动脉体瘤的CT诊断（附22例报告）

目的：探讨颈动脉体瘤的CT影像特征。方法：回顾性分析22例病理证实的颈动脉体瘤的CT表现。结果：22例共28个肿块,其中双侧6例,所有肿块位于舌骨水平颈动脉鞘区。23个肿块增强扫描CT表现特点：肿块显著强化;调整窗值可见肿块位于颈动脉分叉,颈内、外动脉间距增宽;螺旋CT动脉期薄层图像显示较大肿块周围多发增粗的供血动脉影（10/12）;螺旋CT三维血管重建及MPR重组可显示颈动脉分叉角度扩大（10/12）,呈＂杯口状＂,肿块在其上。本组CT增强诊断符合率达100%。结论：颈动脉体瘤的增强CT表现具有特征性,易与其他肿瘤相鉴别,螺旋CTA可清晰显示颈部血管改变。

CT diagnosis of carotid body tumor (22 cases report)

Objective:To study CT findings in diagnosis of carotid body tumor.Methods: The CT fingdings of carotid body tumor in 22 cases were analyzed retrospectively.Results: There were 28 masses in the 22 patients,of which 6 were bilaterally involved.All the masses located at carotid sheath region at the level of the hyoid bone.The enhanced CT findings of 23 masses were as follows:firstly,the masses were highly enhanced with well-defined margins;secondly,masses were found located at the carotid bifurcation with the widened distance between ECA(external carotid artery)and ICA(internal carotid artery);thirdly,the thin-slice imaging of arterial phase with spiral CT showed that there were multiple applying artery on the mass edges;lastly,images reconstructed by VR and MPR of cervical ateray demonstrated that the carotid bifurcation were cuppingly widened with the masses locating on it.The coincidence rate of CT enhanced scanning in this paper was 100%.Conclusion:The enhanced CT findings of carotid body tumor has characteristics,and were quite useful in differentiating diagnosis.Cervical vessels can be clearly demonstrated by spiral CTA.