Giant left ventricular aneurysm mimicking myocardial bridge.

An 81-year-old woman was admitted due to acute pulmonary edema. The electrocardiogram showed new Q-waves in anterior leads with ST-elevation in anterolateral leads. Coronary angiogram showed a 100% occluded second diagonal branch with an image of systolic and diastolic compression of the mid-to-distal portion of the left anterior descending coronary artery (LAD) causing a long "bridgelike" effect. Ventriculography revealed a giant aneurysm of the anterolateral wall. A 3-dimensional volume-rendered cardiac computed tomography scan suggested that the aneurysm produced extrinsic compression of the LAD.