Right coronary artery ectasia with coronary arteriovenous fistula mimicking Takotsubo-like left ventricular dysfunction in the electrocardiogram.

A coronary arteriovenous fistula is an abnormal connection between a coronary artery and any of four chambers in the heart. We repot a unique case with a fistulae originating from right coronary artery and draining into the right atrium via coronary sinus although Takotsubo-like left ventricular dysfunction or acute myocardial infarction was initially thought to have occurred according to the electrocardiogram finding.