Figure 1: Coronary section from the mid right coronary artery in a 38 yearold man who died sudden cardiac death out-of-hospital. Narrow black arrows = Dense focus of adventitial lymphocytes. Fat black arrows = Intimal calcification involving ¾ of the artery circumference. Luminal stenosis estimated to be less than 50%. Open black arrows = Small, focal endothelial erosion. White asterisk = Injection mass in lumen.