An Unusual Case of Right Anterior Descending Coronary Artery

The left anterior descending coronary artery (LAD) arises from the left coronary sinus about 10-12 mm above the annular plane and traverses down the interventricular groove. With deep septal and diagonal branches, it supplies the left side of the heart. Here, we describe an extremely rare case of anomalous origin of the LAD from the right coronary artery, which courses epicardially over the right side of the heart with its ramifying branches, which can be described as the "right anterior descending coronary artery (RAD)."