Figure 8: (a) Transthoracic echocardiogram of the patient #5 in the subcostal short axis view showing evidence of a relatively small atrial septal defect with left to right shunt [white arrow].(b) Apical four chamber view showing significant right atrial [arrow] and right ventricular enlargement.(c) Transesophageal echocardiogram in the bicaval view showing, in addition to a small secundum atrial septal defect [green arrow], a superiorly located sinus venosus atrial septal defect with left to right shunt [red arrow]. (d) Three-dimensional echocardiography delineated both the defects- ostium secundum atrial septal defect and the sinus venosus defect