ABC | Volume 112, Nº4, April 2019

Anatomopathological Correlation Pereira et al Arrhythmia and heart failure Arq Bras Cardiol. 2019; 112(4):466-472 Figure 3 – Sternocostal surface of the heart: intramyocardial course (arrows) of the anterior descending artery (ADA). D1- First diagonal branch of the ADA. PT: pulmonary trunk. Figure 2 – Left lateral surface of the base of the heart: A) Crossing (arrow) of the proximal epicardial segments of the anterior descending artery (ADA) and circumflex (Cx) artery; theADA is in a position above the Cx. B) Cx course from its origin at the aorta (AO). TheADAhas been folded superiorly to show the circumflex artery epicardial course. LM: left marginal branch of the Cx. PT: pulmonary trunk. finding in the literature. 13 The bicuspid aortic valve is the most prevalent cardiac congenital anomaly and, in autopsy studies, its incidence ranges from 0.9-2.5% in the general population, 14 being more frequent in male individuals, with a men/women ratio ranging from 1.8 to 5.6. 15 The anatomical alterations in coronary arteries may represent variations of the normal anatomy or congenital anomalies, depending on their incidence in the general population. 16 Alterations in the general population are known as variants or anatomical variations of the normal in the general population, whereas those occurring in less than 1% are defined as congenital anomalies. The incidence of coronary anomalies ranges from 0.2% to 1.2% in the different series found in the literature, depending on the analyzed population and the methods 470