A secundum atrial septal defect (ASD 2) was closed percutaneously via the transfemoral approach in a 3-year-old boy with interrupted inferior vena cava and azygos continuation. The procedure was guided by transesophageal echocardiography and fluoroscopy using conscious sedation. Successful transhepatic and jugular accesses in similar patients are described. This is the first pediatric report describing a transfemoral closure of a secundum atrial septum defect via azygos continuation.