Azygos Continuation of Inferior Vena Cava: CT Appearance
- 1 June 1980
- journal article
- case report
- Published by Wolters Kluwer Health in Journal of Computer Assisted Tomography
- Vol. 4 (3) , 392-397
- https://doi.org/10.1097/00004728-198006000-00015
Abstract
Two cases demonstrating the computed tomographic appearance of azygos continuation of the inferior vena cava (IVC) are presented. One is associated with a retroaortic left renal vein and the other with a duplicated IVC. An enlarged azygos vein should not be confused with retrocrural lymphadenopathy or a mediastinal mass. It is a tubular structure extending from the diaphragm to the azygos arch, which together with the aorta forms a characteristic collar around the trachea. It enhances intensely after intravenous injection of contrast material.Keywords
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