Circumflex Artery Arising From the Pulmonary Artery: Always a Malignant Coronary Anomaly?

Some coronary artery anomalies are associated with increased risk of sudden cardiac death and myocardial infarction in young patients. There are few data on the clinical and prognostic relevance of isolated origin of the left circumflex artery from the pulmonary artery, an extraordinarily rare variant of anomalous left coronary artery from the pulmonary artery. (Level of Difficulty: Intermediate.)