Patient with Kawasaki disease who presented with acute myocardial infarction in young age Although the clinical course of Kawasaki disease is self limiting, coronary aneurysm or myocardial disorders develop in about 20% of the patients. In recent years there have been reports of ischemic heart disease as sequelae of Kawasaki disease in adults, especially young adults. In Korea, there was only one case report in 1995. We report a young woman who presented as acute myocardial infarction with coronary artery aneurysms which highly suggest the underlying Kawasaki disease. The acute myocardial infarction in this patient seems to be the late cardiologic sequelae of Kawasaki disease, which has been silent clinically until the presentation as an acute myocardial infarction. New noninvasive diagnostic tests are being tried to improve the detection of coronary artery complication. However, coronary angiography is still widely used to determine the presence of coronary artery lesions and access the feasibility of coronary intervention. Another advantage of coronary angiography is that, it is possible to analyze the shape and the size of aneurysm and predict the prognosis. In this case we performed the percutaneous transluminal coronary angioplasty(PTCA) instead of surgery. Further study comparing surgery with percutaneous coronary angioplasty is needed.