Coronary sinus orifice atresia is rare. We describe two cases, one with an
atrioventricular septal defect and another with supracardiac totally anomal
ous pulmonary venous drainage. The association with the latter has not been
described previously. The importance of diagnosing the defect is emphasize
d and surgical treatment is discussed. (C) 1998 by The Society of Thoracic
Surgeons.