title: Images in cardiology: UPO: unidentified pericardial object.
authors.forename: J
authors.initials: J
authors.lastname: Bolk
authors.forename: C L
authors.initials: CL
authors.lastname: Reichert
mesh_terms: D004452:Echocardiography; D005260:Female; D005337:Fibrin / Q000032:analysis; D005547:Foreign Bodies / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D010496:Pericardium / Q000000981:diagnostic imaging*
chemical_list: D005337:Fibrin