Introduction The Aortopulmonary Window (APW) is a rare congenital malformation, representing approximately 0.2% of all congenital heart diseases. It is typically nonrestrictive and requires early surgical intervention to prevent complications such as pulmonary congestion, respiratory infections, and obstructive pulmonary vascular disease. In cases like ours, where the surgical risk is exceedingly high, percutaneous closure may present a viable alternative. […]