Pericarditis presenting and treated as an acute anteroseptal myocardial infarction.

Early recognition and treatment of acute myocardial infarctions have been accepted as improving patient mortality. With the popular use of thrombolytic therapy, it is necessary to rule out contraindications and to consider other causes for ST segment elevation. A unique patient experiencing chest pain with marked and localized ST segment elevation in the anteroseptal leads is presented. He was treated with thrombolytic therapy. Subsequent investigations ruled out the diagnosis of myocardial infarction and confirmed the diagnosis of pericarditis. Although the patient's outcome was uncomplicated, physicians are urged to consider the diagnosis of pericarditis before using thrombolytic therapy to avoid life-threatening complications.