case_images: PMC5791504_01
case_images: Two-dimensional transesophageal echocardiography (midesophageal aortic valve short axis view) showing the quadricuspid aortic valve
case_images: ACA-21-95-g001.jpg
case_images: PMC5791504_01_ACA-21-95-g001.jpg
case_images: F1
case_images: Intraoperatively, the transesophageal echocardiography revealed and confirmed the presence of a quadricuspid aortic valve (QAV) with the accessory cusp being rudimentary and placed between the right and left coronary cusps [Video 1 and Figure 1].
case_images: Surgeon's view of the quadricuspid aortic valve with the cardioplegia cannula in the left coronary ostium
case_images: ACA-21-95-g002.jpg
case_images: PMC5791504_01_ACA-21-95-g002.jpg
case_images: F2
case_images: Ostial cardioplegia was administered in the left coronary ostium [Figure 2].
case_images: Cardioplegia being delivered in the right coronary ostium located near the accessory cusp of the aortic valve
case_images: ACA-21-95-g003.jpg
case_images: PMC5791504_01_ACA-21-95-g003.jpg
case_images: F3
case_images: The right coronary ostium was found to be anomalously present near the accessory fourth cusp [Figure 3].