Continuation of our lady with the anomalous left main stem. We managed to do a Cardiac CT or a CT coronary angiogram to be precise, as planned for anatomy delineation. You can appreciate below that her left main stem arises from the ostium or extremely proximal segment of her right coronary artery (which is dominant) and runs anteriorly. This then divides into a left anterior descending artery, ramus intermedia and a small left circumflex. We can't see it in this video, but there is an intramura