Presentation
Initial CXR performed for cough.
Patient Data
Age: 30 years
Gender: Female
From the case:
Coarctation of the aorta
Frontal

Abnormal outline of the aortic knuckle with an indentation suggesting figure 3 sign of aortic coarctation.
From the case:
Coarctation of the aorta
Frontal Aorta

Digital subtraction angiography demonstrating aortic coarctation and figure of 3.
Sagittal C+ arterial phase

CT angiogram showing aortic coarctation distal to the left subclavian artery.
Case Discussion
Coarctation of the aorta just distal to the origin of the left subclavian artery. CXR shows good example of the figure 3 sign.