
Figure 1
Coronary angiography revealed aneurysmal left circumflex artery with no significant disease in the left anterior descending or right coronary artery.

Figure 2
(A) Three-chamber view on transthoracic echocardiogram shows the cystic structure with no contrast flow after normal saline injection. (B) Four-chamber view on transesophageal echocardiogram showing the cystic structure in relation to the left atrium. (C) Tethered posterior leaflet.
Video 1
Transesophageal echocardiogram with color Doppler showing severe mitral regurgitation. see also at https://youtu.be/CDsc0Bmqym0

Figure 3
Surgeon’s view of thrombosed coronary sinuses.