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arch of azygos vein


Definition: the superiorly directed convex arch formed by the terminal part of the azygos vein at the level of the T4/T5 intervertebral disc (transverse thoracic plane) as it arches anteriorly over the root of the right lung, passing from the posterior mediastinum to the inferior vena cava.

Synonym(s): arcus venae azygosTA

Further information

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