Features consistent with an incomplete double aortic arch with a suspected atretic or involuted distal right aortic arch. The right subclavian and right common carotid artery originates from the right arch and the left subclavian artery and left common carotid artery originates from the left arch. There is a left-sided descending thoracic aorta.
There is anterior and bilateral tracheal indentation and consequently a pyramidal tracheal contour just above the carina.
CT chest is otherwise normal.