Figure 6

Hypoplasia of the horizontal portion of the aortic arch. Anatomic specimen (A) and suprasternal echocardiogram (B) show stenosis (hypoplasia) between the left carotid and subclavian arteries (black arrows in A, white arrows in B). LSA: Left subclavian artery; LCA-Left carotid artery, BT: Brachiocephalic artery; DA: Ductus arteriosus, DAo: Descending aorta. Other abbreviations as before.