An infant, born to a mother on carbamazepine monotherapy, had a complex cardiac anomaly, consisting of double-outlet right ventricle (DORV), right-sided aorta, pulmonary artery hypoplasia, left ventricular endocardial fibroelastosis, and anatomic evidence of a spontaneously closed muscular ventricular septal defect (VSD). The last finding is one which, to the best of our knowledge, has never been illustrated before.