Heart (A), coronary artery (B) and epicardium (C-D). A: In horizontal section of the heart, an old myocardial infarction lesion (10 × 4 cm) is present from the anterior to the lateral walls. The epicardium is patchily fibrotic (arrows). B: At a strictured site of the circumflex branch of the left coronary artery, both atherosclerosis and massive plasma cell infiltration are seen, but they are not associated with each other. C-D: Epicardium. Plasma cells infiltrate around the peripheral nerves (arrowhead).
Fujii et al. Diagnostic Pathology 2014 9:41 doi:10.1186/1746-1596-9-41