[Myocarditis simulating acute myocardial infarction. A case report].

A six month-old infant presenting congestive heart failure and electrocardiographic features of acute myocardial infarction, including increased CK-MB levels. The echocardiographic study showed normal origin of the coronary arteries and features compatible with myocardiopathy. After good early response to conventional therapy, the patient developed severe congestive heart failure and shock, and died. In the post-mortem study, the coronary arteries were previous. Microscopic study was compatible with acute myocarditis.