We report the case of an infant boy born at 39 weeks and 5 days who presented a cleft lip and palate. During the assessment to detect associated malformations, cardiac auscultation revealed a systolic heart murmur. Echocardiography and subsequent thoracic computed tomography angiography identified an aneurysm of the ductus arteriosus. Ductus arteriosus aneurysm, a complicated form of patent ductus arteriosus, may not be as rare as once considered. A clear majority of ductus arteriosus aneurysms are asymptomatic and physiologically resolve after birth. Nevertheless, severe complications can occur, primarily during the postnatal period.