Dual left anterior descending coronary artery: a rare coronary anomaly

Dual left anterior descending artery (LAD) originating from the left and right coronary arteries is an extremely rare congenital coronary artery anomaly. A 65-year-old male patient was admitted with inferior acute myocardial infarction. Coronary angiography showed normal left main coronary artery, a short LAD artery terminating proximally after bifurcating a few diagonal branches, and total occlusion of the proximal left circumflex artery. Selective right coronary angiography showed a vessel arising just after the origin of the right coronary artery, travelling to the left side. Primary angioplasty and stent implantation were successfully performed. The origin and course of the anomaly was also documented by 16-slice multidetector spiral computed tomography, which confirmed angiographic findings.