does not carry an increased blood volume and is not dilated during fetal life (Fig. 11 A–C). Other elements do not differ from the above described variant. Furthermore, the ductus (ligamentum) arteriosus completes the vascular ring and may cause compressive symptoms.
RAA with an aberrant subclavian artery, the ductus arteriosus arising directly from the descending aorta and connecting to the LPA. A. A high parasternal view showing the upper mediastinum in a transverse plane. Systole
Maciej A. Karolczak
Journal of Ultrasonography , ISSUE 76, 24–42