Fig. 1



Fig. 1 : 

A. Preoperative transthoracic echocardiography showing systolic prolapse of paraannular tissue in the left atrium (arrows) forming a large paraannular aneurysm, widely communicating with the left ventricular cavity (arrowhead). B and C. Transoesophageal echocardiography showing large subannular aneurysm in the anterior-lateral region of the posterior mitral annulus (B, arrow) with severe mitral regurgitation (C, small arrow) and systolic filling of the aneurysm (C, arrowhead). D. Preoperative cardiac ventriculography showing systolic expansion of the aneurysm (arrow). E. Preoperative coronary angiography showing systolic compression of the distal circumflex coronary artery (arrow). LV: left ventricle; RV: right ventricle; RA: right atrium; LA left atrium; SMA: submitral aneurysm.