“…It is generally believed that the presence of symptoms is surgical indication 12 . Surgical procedures include aneurysm ligation, resection, coronary bypass arterial graft, etc, 13,14 Here the giant CAA caused mitral obstruction and the new‐born developed atrial tachycardia, new‐born therapy was performed following delivery. In consideration of the disorder of blood vessels in the base of CAA, surgical resection may cause complications such as massive hemorrhage, so blood was extracted from the aneurysm to relieve mitral obstruction, aneurysm ligation was performed.…”