An azygos arch valve refers to a venous valve at the site of the azygos arch. They are considered common and are more frequently seen at CT when high contrast material injection rates and right arm injections are used 2. They can be of various sizes and shapes, and many of them show features of insufficiency.
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- 2. Yeh BM, Coakley FV, Sanchez HC et-al. Azygos arch valves: prevalence and appearance at contrast-enhanced CT. Radiology. 2004;230 (1): 111-5. doi:10.1148/radiol.2301021216 - Pubmed citation
- 3. Ichikawa T, Endo J, Koizumi J et-al. Visualization of the azygos arch valves on multidetector-row computed tomography. Heart Vessels. 2008;23 (2): 118-23. doi:10.1007/s00380-007-1009-6 - Pubmed citation