Abstract：
OBJECTIVE: Here, we report a case of the right-sided aortic arch with isolation of the left innominate artery and hypoplasia of the left internal carotid artery.
METHODS: A 42-year-old male patient underwent a whole-body computed tomography angiography (CTA) examination upon the clinical suspicion of vasculitis.
RESULTS: CTA revealed a right-sided aortic arch with the isolation of the left innominate artery and hypoplasia of the left internal carotid artery.
CONCLUSIONS: The right-sided aortic arch, with the isolation of the left innominate artery, is a scarce vascular variation that may occur with other cardiovascular anomalies such as ventricular septal defect. It can be asymptomatic or can present with symptoms of subclavian steal syndrome. Although its association with the agenesis of the left internal carotid artery has been reported, its association with the hypoplasia of the left internal carotid artery has not been reported previously to the best of our knowledge.
METHODS: A 42-year-old male patient underwent a whole-body computed tomography angiography (CTA) examination upon the clinical suspicion of vasculitis.
RESULTS: CTA revealed a right-sided aortic arch with the isolation of the left innominate artery and hypoplasia of the left internal carotid artery.
CONCLUSIONS: The right-sided aortic arch, with the isolation of the left innominate artery, is a scarce vascular variation that may occur with other cardiovascular anomalies such as ventricular septal defect. It can be asymptomatic or can present with symptoms of subclavian steal syndrome. Although its association with the agenesis of the left internal carotid artery has been reported, its association with the hypoplasia of the left internal carotid artery has not been reported previously to the best of our knowledge.
摘要：
目的：这里，我们报告了一例右侧主动脉弓，并隔离了左无名动脉和左颈内动脉发育不全。
方法：一名42岁男性患者因临床怀疑血管炎而接受了全身CT血管造影（CTA）检查。
结果：CTA显示右侧主动脉弓，左无名动脉分离，左颈内动脉发育不全。
结论：右侧主动脉弓，随着左无名动脉的分离，是一种罕见的血管变异，可能与其他心血管异常如室间隔缺损一起发生。它可以是无症状的或可以表现为锁骨下动脉盗血综合征的症状。虽然它与左颈内动脉的发育不全有报道，据我们所知，它与左颈内动脉发育不全的关联以前没有报道。
方法：一名42岁男性患者因临床怀疑血管炎而接受了全身CT血管造影（CTA）检查。
结果：CTA显示右侧主动脉弓，左无名动脉分离，左颈内动脉发育不全。
结论：右侧主动脉弓，随着左无名动脉的分离，是一种罕见的血管变异，可能与其他心血管异常如室间隔缺损一起发生。它可以是无症状的或可以表现为锁骨下动脉盗血综合征的症状。虽然它与左颈内动脉的发育不全有报道，据我们所知，它与左颈内动脉发育不全的关联以前没有报道。
