Dual left anterior descending coronary artery: A rare coronary anomaly

We were asked to review the coronary angiogram of a patient showing a dual left anterior descending (LAD) arterial supply anomaly. This prompted a rev iew of the database at Ochsner Foundation Hospital for congenital coronary anomalies in general and similar cases in particular. Between 1989 and 1996 , 15,714 coronary catheterizations were performed. We found 134 anomalies ( 0.85%); the presence of a dual supply to the usual LAD territory was Sound in 2 patients (0.013%). In this report, we present the absolute and relativ e incidence of the individual patterns.