CTICasesInterrupted Aortic Arch, Type A with Aortopulmonary Window
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Imaging findings
Abnormal prenatal echocardiogram showed an interrupted aortic arch, type A. The descending thoracic aorta is supplied by a very large patent ductus arteriosus (PDA). There is a very large aortopulmonary window connection, appearing as a big defect and connection between the aorta and pulmonary artery.
Key takeaways
Type A interrupted aortic arch is typically associated with a ventricular septal defect (VSD), but this case demonstrates an unusual association with a large aortopulmonary window connection instead. This highlights a rare but recognized variant in the presentation of this congenital heart anomaly.
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