A double left anterior descending coronary artery emerging from the right Valsalva sinus: a case report and a brief literature review.

Anomalies of the coronary artery are incidentally detected during coronary angiography and are seldom found in daily clinical practice. In the reported studies, the incidence ranges from 0.6 to 1.3%, and men are more frequently affected. Among the different types, the detection of a double left anterior descending coronary artery emerging from the right coronary sinus is extremely rare. We describe a case of a 64-year-old male patient admitted to our institution because of ST segment elevation myocardial infarction. After successful systemic lysis, he underwent coronary angiography that showed multivessel coronary disease, a patent infarct-related artery and a double left anterior descending artery. We discuss the clinical relevance of a coronary artery emerging from the opposite Valsalva sinus and its clinical implications.