Spider view – LAO caudal view of left coronary angiogram
LMCA: left main coronary artery; LCX: left circumflex coronary artery (lesion in LCX marked by yellow arrow); LAD: left anterior descending coronary artery; Early OM: early obtuse marginal branch of the LCX. Dye (contrast) reflux into the aorta from LMCA is seen. Absence of dye reflux would mean left main ostial disease or rarely spasm.