Presentation
Respiratory distress
Patient Data
There is an interruption of the aortic arch between the left common carotid and left subclavian arteries. Normal right subclavian artery. The left subclavian artery emanates from the proximal descending aorta which arises from the main pulmonary artery via a patent ductus arteriosus. Slight mesocardia with mild right atrial and right ventricular dilatation and the enlarged main pulmonary trunk is larger than the aorta
Hypovoluminous ,totally non-aerated/ consolidated left lung. There is also diffuse ground-glass density of the right lung with multiple patchy areas of consolidation more prominent basally. Bilateral pulmonary plethora
Annotated selected images of 3D CT study highlight the abnormality
Case Discussion
Interrupted aortic arch is a congenital cardiovascular anomaly where there is a separation between the ascending and descending aorta.
It is classified into three types:
- type A: interruption occurs distal to the left subclavian arterial origin
- type B: interruption occurs between the left common carotid and left subclavian arterial origins
- type C: interruption occurs proximal to the left common carotid arterial origin
Each type is divided into three subtypes:
- subtype 1: normal subclavian artery
- subtype 2: aberrant subclavian artery
- subtype 3: an isolated subclavian artery that arises from the ductus arteriosus