ABSTRACT
Recently the incidence of coronary artery diseases in young patients has been increased in Korea, which may be related with the changes in dietary habits, stress and smoking. This report presents an 18-year-old male patient who suffered from acute non-ST elevation myocardial infarction. He had a history of 1.5 pack-years smoking, but no other risk factors. Depression of ST segments more than 3 mm in V1-6, I and aVL was documented on a twelve-lead electrocardiogram. Two-Dimensional echocardiography revealed hypokinetic anteroseptal wall motion, and myocardial SPECT demonstrated severe, reversible perfusion defects in the anteroseptal wall. A diagnostic coronary angiogram and an intravascular ultrasound revealed total occlusion in the proximal left anterior descending coronary artery due to heavy atheromatous plaque. The lesion was treated successfully by a coronary balloon and stent. He has no major adverse cardiovascular event on nine-month clinical follow-up after discharge.