Figure 2

From the ME AV SAX view, the orifice of LAD-to-PA fistula was not found in the beginning. The LAD artery to PA fistula (diameter = 0.5 cm) was partially visualized (A); after tracing down to the LM with the view transition from SAX to LAX, the LAD-to-PA fistula was fully visualized with 0.5 cm in diameter by tracing the vessel during transition from the ME AV SAX view to the ME AV LAX view (B, C, D). Mid-esophageal aortic valve short-axis view, LA: left atrium, LM: left main coronary, LV: left ventricle, LVOT: left ventricular outflow tract.