Abstract:Persistent left-sided superior caval veins (SVC) are present in 0.4% of the population. In the majority of cases, the persistent left SVC drains into the right atrium via the coronary sinus, but direct connection to the left atrium is also recognized. Previous reports have described re-opening of persistent left SVCs in patients with congenital heart disease following bidirectional cavopulmonary connection or Fontan-type procedures, suggesting that the lumen of the left SVC obliterates during embryological dev… Show more
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