CTICasesAortopulmonary window
Imaging findings
Chest radiograph shows dilated pulmonary arteries and cardiomegaly. CT chest in a 27-year-old woman shows a large, wide communication between the ascending aorta and the main pulmonary artery immediately above the sino-tubular junction, associated with severe right ventricular hypertrophy, pulmonary hypertension, and duplicated superior vena cavae.
Key takeaways
Aortopulmonary window is a rare congenital anomaly resulting from incomplete septation of the truncus arteriosus. Unlike patent ductus arteriosus, the connection is located proximally between the ascending aorta and pulmonary trunk, leading to early, severe pulmonary arterial hypertension.
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