Type I–double-branched left main stem giving off the left circumflex branch and the interventricular paraconal branch, which gave off the septal branch. BarszczKarolina KupczyńskaMarta PolgujMichał Klećkowska-NawrotJoanna JaneczekMaciej Goździewska-HarłajczukKarolina DzierzęckaMałgorzata JanczykPaweł 2017 <p>1 –ascending aorta, 2 –left coronary artery (main stem), 3 –interventricular paraconal branch, 4 –left circumflex branch, 5 –septal branch.</p>