Late Identification of a Stealthy Aorto-Pulmonary Window: A Case Report.

The term "aortopulmonary window" (APW), often referred to as "aortopulmonary septal defect," refers to a rare congenital medical disorder where there is an improper direct link between the main pulmonary artery and the ascending aorta. It can be combined with other cardiac congenital conditions or be an isolated lesion. Herein, we report the incidental discovery of a minor, restrictive aortopulmonary septal defect in a 60-year-old male who denied having any clinical symptoms. Incidentally detected APW in adulthood is uncommon and, hence, can be readily overlooked, a fortiori, in asymptomatic patients.