Prenatal diagnosis of fetal double aortic arch: report of a case.

Double aortic arch (DAA) is the most common congenital anomaly of the aortic arch system, in which the trachea and esophagus are completely encircled by connected segments of the aortic arch and its branches, often resulting in variable airway compression. We present a case of fetal DAA prenatally diagnosed by fetal echocardiography and clearly confirmed at autopsy. The autopsy visualization allowed for better understanding of this rare cardiac anomaly and facilitated improving the prenatal diagnostic rate.