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MR angiography of left-sided cervical aortic arch with aberrant right subclavian artery

Departments of ¹ Radiology and ² Paediatric Cardiology, Hacettepe University School of Medicine, 06100 Ankara, Turkey

View larger version (138K): [in this window] [in a new window]   Figure 1. Posteroanterior chest radiograph shows left-sided superior mediastinal widening.

View larger version (120K): [in this window] [in a new window]   Figure 2. Coronal source image shows the high location of the aortic arch which is left-sided (arrow).

View larger version (32K): [in this window] [in a new window]   Figure 3. (a) Three-dimensional (3D) volume-rendered MR angiography of the aortic arch from an anterior aspect demonstrates left-sided aortic arch with contralateral descending aorta. Branches arising from the aorta are the right common carotid artery (RCCA), left common carotid artery (LCCA), left subclavian artery (LSCA) and aberrant right subclavian artery (ARSA). (b) 3D volume-rendered MR angiography of the aortic arch from an posterior aspect shows the left vertebral artery (LVA) arising from the aortic arch directly. Note early bifurcation of the left common carotid artery.