Atrioventricular septal defect with a common atrioventricular valve with Rastelli type A insertion. (A). The dotted line indicates the common atrioventricular junction. Above it are the ostium primum (upper asterisk), the atrioventricular septal defect itself (lower asterisk) and the ventricular septal defect in the interchordal spaces (lower arrow). The upper arrow points to the region of the fossa ovale. (B) The 4-chamber transthoracic image shows the same features as in the anatomic specimen. Abbreviations: AL: Anterior left; AR: Anterior right. Other abbreviations as before.