Incidence and distribution of anomalous coronary artery: analysis of 94 necropsy cases

Abstract

Introduction: Present human cadaveric study was aimed to explore incidence and distribution of anomalous coronary artery. Methods: 10% formalin fixed ninety-four adult human hearts were studied in-vivo and in-vitro. Result: Incidence of anomalous coronary artery was 1.06%. There was anomalous course and distribution of left circumflex artery and posterior descending artery. Distribution of anomalous right coronary artery was right atrium, posterior surface of left atrium, right ventricle except a strip adjoining to the anterior interventricular groove, inferior surface of left ventricle, posteroinferior one-third of interventricular septum. Distribution of anomalous left coronary artery was left atrium except posterior surface, sternocostal and lateral surfaces of left ventricle, small strip of right ventricle, anterosuperior two-thirds of interventricular septum. Conclusion: The study findings suggest, radiologists and surgeons should be aware of anomalous origin and course of posterior descending artery as well as left circumflex artery. Variation of coronary artery knowledge is required for accurate reorganization and documentation during angiography and surgical interventions to avoid complications.

Keywords

• Right coronary artery
• Left coronary artery
• Circumflex artery
• Posterior interventricular artery
• Anteriorinterventricular artery