CT - Annotated study
Embryologically, where does the brachiocephalic trunk originate from?
The brachiocephalic artery arises from the aortic sac and the proximal right fourth aortic arch.
What leads to the formation of a high-riding brachiocephalic trunk?
An elongated proximal portion of the right fourth aortic arch.
Brachiocephalic trunk (yellow asterisk)
Right common carotid (red asterisk)
Right subclavian artery (green asterisk)
Kinked left common carotid (red circle)
Retropharyngeal right ICA (blue asterisk)
Left ICA (black asterisk)