title: Pericardial defect mimicking a left atrial mass.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004452:Echocardiography; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male; D010496:Pericardium; D000267:Tissue Adhesions / Q000175:diagnosis