Abnormal Course of Right Coronary Artery Together with Variant Left Coronary Artery and Partial Atresia of Cicumflex Artery.

Heart is supplied by right and left coronary arteries. Therefore, the knowledge of normal and variant anatomy of both these arteries and their configurations is indispensable for proper understanding of diagnosis and treatment of dreaded cardiac diseases. During routine cadaveric dissection, a heart of an adult female with anomalous course of Right Coronary Artery (RCA), new variant of trifurcated Left Coronary Artery (LCA) and partial atresia of circumflex (CX) artery was detected. Trifurcation of LCA into anterior interventricular, CX and a ramus intermedius without giving accessory branches has been reported. But in the present case, a variant trifurcation was found having rare configuration i.e., the interventricular branch gave two additional branches, a new variant along with ramus intermedius also giving an additional branch another new variant followed by partially hypoplastic circumflex artery. Besides this, RCA has an aberrant course modifying normal supply of heart. This rare configuration of coronary arteries will facilitate the cardiac surgeons to improve the understanding of defects of coronary arteries and planning of angiography, coronary by bypass grafting and other surgical interventions, radiologists for refining interpretation of imagery and anatomists for new variants.