Utility of Pre- and Postoperative Computed Tomography Angiography for the Evaluation of a Complex Vascular Ring.

We present the case of a neonate born with an unusual complex vascular ring formed by a left-sided aortic arch that had retroesophageal course to join a right-sided descending aorta and a very large right-sided arterial ductus from the right pulmonary artery to the descending aorta. Associated finings included aortic arch hypoplasia, aberrant right subclavian artery, and aberrant origin of the left pulmonary artery from the aorta. We focus on the role of computed tomography angiography in the preoperative and postoperative assessment of this complex anomaly.