A rare V-shaped course variant of the posterior right diagonal artery: a case description and literature analysis

[摘要] Most coronary artery anomalies are discovered incidentallyusing coronary angiography or multidetector-row computedtomography (MDCT) (1,2). Determining the coronaryartery anatomy and variations in coronary arterial branchingis crucial for percutaneous coronary intervention (PCI) andcoronary artery bypass surgery. Coronary artery anomalies inthe posterior ventricular wall commonly concentrate on theperfusion arteries of the posterior interventricular septum,which mainly display a combination of multiple coronarybranches running along the posterior interventricular sulcus(PIS). The posterior right diagonal artery (PRDA) is animportant variant in the branching of the right coronaryartery (RCA), which often occurs as a supplement or even areplacement for the posterior descending artery (PDA) andis mainly responsible for the perfusion of the inferior PIS (3).However, due to insufficient data, the origin, course, andidentification of the PRDA remain undefined (3).

[学科分类] 外科医学

[关键词] Posterior descending coronary artery;posterior right diagonal artery (PRDA);coronary vessel anomalies;computedtomography angiography;coronary angiography