Cor triatriatum dexter assessed by three-dimensional echocardiography reconstruction in two adult patients.

Cor triatriatum dexter is a rare congenital anomaly caused by persistence of the right valve of the embryonic sinus venosus, and this results in septation of the right atrium. Three-dimensional echocardiography is a novel technique that can be used to identify and characterize this entity. Here, we report two women with cor triatriatum dexter.