Acute myocardial infarction in a young woman with normal coronary arteries and myocardial bridging.

Myocardial bridging (MB) is defined as an intramural segment of a coronary artery that normally courses epicardially. MB is usually a benign condition; however, some cases resulting in myocardial ischaemia, infarction and sudden death have been reported. We describe a case of myocardial infarction related to MB in a young healthy woman with no risk factors for coronary artery disease. The bridge was demonstrated in detail by coronary CT angiography using multiplanar reconstruction and three-dimensional volume-rendered techniques.