Coarctation of the aorta

Case contributed by Andrew Dixon
Diagnosis certain


Initial CXR performed for cough.

Patient Data

Age: 30 years
Gender: Female

Abnormal outline of the aortic knuckle with an indentation suggesting figure 3 sign of aortic coarctation. 


Digital subtraction angiography demonstrating aortic coarctation and figure of 3.



CT angiogram showing aortic coarctation distal to the left subclavian artery.


MR angiogram confirms aortic coarctation.

Annotated image

Figure of 3 sign

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

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.