Common arterial trunk, interrupted aortic arch, and crossing pulmonary artery coexistence: Case report of a rare anomaly

Truncus arteriosus (common arterial trunk) is characterized by a single great artery that arises from the heart, and this single artery supplies the systemic, coronary, and pulmonary circulations. According to the van Praagh classification, truncus arteriosus can be divided into 4 types: type A-1, type A-2, type A-3, and type A-4. In type A-4, the aortic arch is hypoplastic or interrupted, there is a large patent ductus arteriosus (PDA), 1 and 1 or both branches of the pulmonary artery may have intrinsic stenosis, hypoplasia, or both.2 In order to prevent pulmonary vascular disease, surgeries should be performed in the first month.3 Therefore, early surgical repair is very important for the control of pulmonary hypertensive disease.