CTICasesAortic Atresia with Large Patent Ductus Arteriosus
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Imaging findings
A patient with a complex congenital heart defect presented with a hypoplastic ascending aorta that ended in the arch vessels, excluding the left subclavian artery. A massive patent ductus arteriosus (PDA) was observed supplying the descending aorta, indicating aortic atresia after the takeoff of the left common carotid artery. Additional findings included a large secundum atrial septal defect (ASD) and a membranous ventricular septal defect (VSD).
Key takeaways
Aortic atresia is a severe congenital heart anomaly where the ascending aorta is underdeveloped, necessitating a large PDA to maintain systemic circulation to the lower body. This condition often coexists with other cardiac defects like ASD and VSD. Surgical interventions, such as the Norwood procedure, are typically required to reconstruct the aortic arch and establish adequate systemic flow.
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