Coarctation of the aorta

Case contributed by Dr Andrew Dixon


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

DSA (angiography)

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

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Case information

rID: 18771
Published: 20th Jul 2012
Last edited: 3rd Apr 2021
System: Chest, Vascular
Tag: aorta
Inclusion in quiz mode: Included