<unk>  is a<unk>  anomaly in which the superior vena cava or inferior vena cava has an aberrant interruption or coarctation.
In some cases, it can be asymptomatic.
Congenital stenosis of vena cava
Ductus arteriosus aneurysm
Persistent left inferior vena cava
Double inferior vena cava
Persistent left superior vena cava
Aneurysm of sinus of valsalva
Aortopulmonary fistula
Congenital absence of the pericardium