Coarctation of the aorta - figure of 3 sign

Case contributed by Frank Gaillard
Diagnosis almost certain

Patient Data

Age: Child

Chest x-ray demonstrates focal indentation of the distal aortic arch consistent with coarctation of the aorta. This is known as a figure of 3 sign. No definite inferior rib notching. 

Annotated image

The figure of 3 sign is the direct visualization of the coarcted segment. 

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.

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