Unusual Branching Pattern of Left Coronary Artery- Case Report

During dissection of thorax of an 80 year old Female cadaver for undergraduate MBBS students, a heart was detected to have variant branching pattern of left coronary artery. Typically left coronary artery bifurcates into anterior interventricular artery and circumflex artery which continues in the left coronary sulcus. But the present case left coronary artery splitted into anterior interventricular artery and common trunk. The anterior interventricular artery gave diagonal/ventricular branches in the left as usual but ectopically generated a ventricular minor artery and a luminal artery. The luminal artery entered the infundibulum of right ventricle and ended near the septal papillary muscle. Common trunk divided into circumflex artery and anomalous diagonal artery. The case is reported for its virgin occurrence. The knowledge of new configuration of branches of left coronary artery will be of paramount importance to cardiologists in cardiac surgery and to anatomists for new variant.