Incidental finding of pulmonary arterial sling during patent ductus arteriosus surgery in a patient with Mowat-Wilson syndrome

Mowat-Wilson syndrome is a genetic condition due to a mutation in the ZEB2 gene; it affects many systems including the cardiovascular system. The pulmonary arterial sling originates from a failure of development of the proximal portion of the left sixth aortic arch, resulting in an anomalous left pu...