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aortic knuckle

 

Definition: the contour of the aortic arch protruding from the mediastinal silhouette in an anteroposterior (AP) radiograph of the chest.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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