Anterior myocardial infarction due to left anterior descending artery occlusion with stand-alone ST elevation in leads I and aVL.

A 52-year-old woman with a history of hypertension and hyperlipidaemia presented to our institution with a 4-hour history of severe, compressing chest pain. A 12-lead electrocardiogram (ECG) showed STelevation involving leads I and aVL, while the anterior precordial leads were unremarkable (Fig 1a). The provisional diagnosis was a non–high-risk high-lateral myocardial infarction (MI) due to diagonal artery or left circumflex artery (LCx) occlusion.