Glanz S, Gordon D H
J Comput Assist Tomogr. 1981 Apr;5(2):256-8.
A right aortic arch may descend either to the right or left of the spine. When the aorta crosses from right to left posterior to the esophagus, the findings on plain chest film and barium swallow studies may simulate those of a mediastinal mass, especially in older patients. Although aortography is definitive, computed tomography can accurately display the retroesophageal aorta, allowing rapid and hazard free diagnosis.
右位主动脉弓可沿脊柱右侧或左侧下行。当主动脉在食管后方从右向左走行时，胸部平片和食管吞钡造影检查结果可能类似纵隔肿块，尤其是在老年患者中。尽管主动脉造影是确诊方法，但计算机断层扫描能够准确显示食管后方的主动脉，从而实现快速且无风险的诊断。
