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reversed-three sign

 

Definition: on an esophagram of a patient with coarctation of the aorta, the shape of the contrast-filled esophagus caused by the aortic arch (upper convexity) and poststenotic dilatation (lower convexity); the cusp of the backwards 3 is at the level of the coarctation itself.

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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