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Unappreciable Myocardial Bridge Causing Anterior Myocardial Infarction and Postinfarction Angina

We report a case of anterior myocardial infarction in a middle-aged man without risk factors for atherosclerosis in whom myocardial bridge was diagnosed several years later. An abnormal wall motion during acute myocardial infarction masked the characteristic angiographic findings of myocardial bridge and rendered it unappreciable during the initial angiographic study.