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A 49-year-old man presented for evaluation of palpitations and epigastric and burning pain in the lower chest. Treadmill exercise testing with technetium-99m imaging was suggestive of inferior-wall myocardial ischemia. Computed tomographic (CT) coronary angiography (Panel A), performed with a 16-slice scanner after the intravenous injection of 100 ml of iodinated contrast medium, showed anomalous origin of the right coronary artery from the left coronary cusp (LCC). A CT coronary angiogram from a patient with normal coronary arteries is shown for comparison (Panel B). The noncoronary aortic cusp (NCC) and right coronary cusp (RCC), as well as the pulmonary artery (PA) . . . [Full Text of this Article] |