Interatrial communication through coronary sinus orifice
Definition
A congenital cardiovascular malformation in which there is a communication between the left atrium and the coronary sinus allowing interatrial communication through the coronary sinus ostium.
Additional information: 'Interatrial communication through coronary sinus orifice' may or may not be associated with a persistent left superior caval vein (superior vena cava). This occurs in the absence of the coronary sinus (total unroofing of the coronary sinus) or partial unroofing of the coronary sinus.
Also indexed as
Coronary sinus atrial septal defectInteratrial communication through coronary sinus orifice