“…In patient with ACTA2 mutation with thoracoabdominal aortic aneurysm, PDA may complicate surgeries requiring cardiopulmonary bypass (CPB) because of left-to-right shunt and strong adhesion. 2 Although several reports describe usefulness of frozen elephant trunk (FET) for closure of a PDA, use of FET for connective tissue disorder has been often reported negatively. 3 …”