A 5-day-old infant with a pulsatile abdominal mass was studied by angiography and found to have a congenital cardiac diverticulum of the muscular type. Because of the presence of intracardiac defects and dextroposition, an abnormal lower sternum, diastasis recti and an anterior diaphragmatic defect, this case is felt to represent a variant to a rare syndrome previously described.
Miller JD, Matthews EC. Congenital Cardiac Diverticulum. Am J Dis Child. 1973;126(6):814-816. doi:10.1001/archpedi.1973.02110190656015