Superior vena caval duplication
Citation, DOI, disclosures and article data
At the time the article was created Frank Gaillard had no recorded disclosures.View Frank Gaillard's current disclosures
Superior vena caval (SVC) duplication is the most common form of a left-sided SVC, where the normal right-sided SVC remains. The right SVC, however, can be smaller in approximately two-thirds of such cases 3.
Double SVC occurs in 0.3% of the general population. In those with congenital heart diseases, double SVC happens in 10 to 11% 4.
Results from failure of the embryonic left anterior cardinal vein to regress. Drainage is variable and can be to: