During fetal development, the<unk>  wall may fail to fuse causing an atrial<unk><unk>  to arise. A sinus<unk>  atrial<unk><unk>  is one such type of malformation arising from the irregular development of the septum and the superior vena cava or the inferior vena cava.
Atrial septal defect sinus venosus
Interrupted aortic arch
Atrial septal defect coronary sinus
Atrioventricular septal defect
Ductus arteriosus aneurysm
Persistent truncus arteriosus
Atrioventricular canal defect
Atrial septal defect migraine