Coronary artery ectasia (CAE) is dilatation of an arterial segment to a diameter at least 1.5 times that of the adjacent normal coronary artery.CAE can be found in 3-8% of angiographic series and it can be either diffuse affecting the entire length of a coronary artery, or localized. The presence of aneurismal segments produces sluggish or turbulent blood flow, with increased incidence of typical exercise-induced angina pectoris and myocardial infarction.Here, we present a case of a patient with CAE involving all major epicardial vessels, presenting with acute inferior myocardial infarction with a large obstructive thrombus in the distal RCA.
Case
A 63 year-old male, with no significant medical history, presented with symptoms of severe mid sternal chest burning and pressure associated with dyspnea for 2 hours.He had no history of hypertansion,diabetes mellitus,hyperlipidemia,smoking. He did not have a family history of premature coronary artery disease.Physical examination was unremarkable.Electrocardiography (ECG) on admission showed ST elevation in lead D2-D3-AVF and echocardiography showed inferior hypokinesia and mild mitral regurgitation with % 50 ejection fraction.He was diagnosed acute inferior myocardial infarction and immediately was taken to the catheter laboratory.Coronary angiography showed diffuse severe coronary ectasia (Figure:1-2) with total thrombotic occlusion of the right coronary artery(RCA)(Figure:3). There was also severe stenosis and aneurysm in the mid RCA and slow flow in all epicardial arteries.Balloon dilatation was made over and over and intracoronary tirofiban was administered.TIMI 2 flow was seen. (Figure:4) Because of the huge thrombotic burden and ectasia, coronary stent was not implanted.Tirofiban infusion was continued 48 hours along. The patient was initiated on aspirin, clopidogrel, metoprolol,statin and ACE inhibitor. Rheumatologic work up was normal.Patient had no family history or any physical stigmata of connective tissue disease. No childhood history of Kawasaki’s disease.