Citation, DOI & article data
The eustachian valve (also known as the "valve of the inferior vena cava") is a ridge of variable thickness in the inferior right atrium. It is a remnant of a fetal structure that directed incoming oxygenated blood to the foramen ovale and away from the right atrium.
Incomplete regression of this structure results in a thickened ridge at the IVC/RA junction, which can occasionally be thick enough to mimic thrombus or a right atrial mass on echocardiography, cardiac CT, or cardiac MRI.
- 1. Broderick LS, Brooks GN, Kuhlman JE. Anatomic pitfalls of the heart and pericardium. Radiographics. 2005;25 (2): 441-53. doi:10.1148/rg.252045075 - Pubmed citation
- 2. Kydd AC, McNab D, Calvert PA et-al. The eustachian ridge: not an innocent bystander. JACC Cardiovasc Imaging. 2014;7 (10): 1062-3. doi:10.1016/j.jcmg.2014.02.011 - Pubmed citation
- 3. Yavuz T, Nazli C, Kinay O et-al. Giant eustachian valve with echocardiographic appearance of divided right atrium. Tex Heart Inst J. 2003;29 (4): 336-8. Free text at pubmed - Pubmed citation