title: Images in cardiology. The "butterfly" sign of the undilatable lesion.
authors.forename: T
authors.initials: T
authors.lastname: Raina
authors.forename: J
authors.initials: J
authors.lastname: Gunn
mesh_terms: D000787:Angina Pectoris / Q000000981:diagnostic imaging / Q000628:therapy*; D015906:Angioplasty, Balloon, Coronary / Q000379:methods*; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D015607:Stents