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[Arteria coronaria única y cardiopatía coronaria: origen anómalo de la arteria coronaria derecha desde la descendente anterior. Casos clínicosAnomalous origin of the right coronary artery in the middle third of the anterior descending artery. Report of two cases].

The anomalous origin of the coronary arteries is uncommon and the origin of the right coronary artery from the middle third of the anterior descending artery is a finding of extreme rarity. We report two patients with coronary atherosclerotic disease and with an acute coronary syndrome, in whom a single left coronary artery was found. The clinical and angiographic characteristics and the treatment of these patients are described.