迷走左锁骨下动脉的CT诊断  

CT Findings of Aberrant Left Subclavian Artery

作　　者：胡元楠 史河水[1] 孔祥泉[1] 梁波[1] 黄锐[1] 王莉霞[1] 

机构地区：[1]华中科技大学同济医学院附属协和医院放射科,武汉430022

出　　处：《临床放射学杂志》2015年第10期1570-1573,共4页Journal of Clinical Radiology

基　　金：湖北省自然科学基金项目(编号:2013CFB131)

摘　　要：目的分析迷走左锁骨下动脉的CT表现,总结其形态学特征及临床意义。方法回顾性分析行CT检查确诊为迷走左锁骨下动脉共40例患者的CT表现及临床资料,观察迷走左锁骨下动脉的起源、走行及与邻近气管、食管的关系,总结其形态学特征。结果 40例迷走左锁骨下动脉,均起自右位主动脉弓,走行于食管后方。40例均合并局部食管受压征象,17例(42.5%)合并局部气管受压征象,36例(90%)合并Kommerell憩室,憩室平均直径为2.5 cm,2例(5%)合并先天性心脏病,8例(20%)合并其他血管变异。结论迷走左锁骨下动脉起自右位主动脉弓,多走行于食管后方,食管存在不同程度受压征象,且绝大多数合并Kommerell憩室。CT是诊断迷走左锁骨下动脉的有效方法。Objective To summarize the morphological features and clinical signification of aberrant left subclavian artery（ ALSA） by analyzing the imaging signs in CT. Methods 40 cases of ALSA,were retrospectively analyzed by reviewing CT images to observe the origination,path of ALSA and relationship with esophagus,trachea and then summarize its morphological features. Results There were 40 cases of ALSA,all of which run behind the esophagus and be associated with esophagus compression. 17 cases（ 42. 5%） of ALSA were associated with trachea compression,and 36 cases（ 90%）were involved with Kommerell＇s diverticulum. The mean size of the Kommerell＇s diverticulum in ALSA was 2. 5cm. 2 cases（ 5%） were associated with congenital heart disease and 8 cases（ 20%） were associated with other vascular anomalies.Conclusion ALSA arising from the right aortic arch,usually running behind the esophagus,resulting in esophagus being compressed in varying degrees. Most of ALSAs are associated with Kommerell＇s diverticulum.

关 键 词：迷走左锁骨下动脉 右位主动脉弓 Kommerell憩室 体层摄影术 X线计算机 

分 类 号：R543[医药卫生—心血管疾病] R816.2[医药卫生—内科学]