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Anomalous origin of the left coronary artery from the pulmonary artery is rare but causes myocardial ischemia and sudden death. A few patients with this anomaly can survive to adulthood without sufficient collateral coronary flow or surgical intervention. We present here a case of acute inferior myocardial infarction, which may occur due to thrombotic occlusion of the right coronary artery, in a 63-year-old woman with anomalous origin of the left coronary artery from the pulmonary artery, providing specific coronary angiographic findings. < Learning objective : In this manuscript, we present a rare case of coronary heart disease. The coronary angiography and the multidetector computed tomographic coronary angiography provided specific findings for the diagnosis.>.