A case of giant left atrial appendage aneurysm that was discovered incidentally in a school medical examination

Abstract

Chest radiograph showing the protrusion of the left third arch. (b) Transthoracic echocardiogram, in which spontaneous echo contrast is displayed within the giant left atrial appendage aneurysm (LAAA) (arrows). (c) Three-dimensional computed tomography. Arrowheads indicate the LAAA. (d) Intraoperative finding. (e) Inner side of the resected specimen (left) and outer side of the resected specimen (right).