Anomalous aortic origin of the left coronary artery.

We present an unusual case of an anomalous left coronary artery arising from the contralateral sinus of Valsalva: a 63-year-old male patient who consulted to our emergency department with 1-week history of progressive dyspnea on exertion with clinical signs of heart failure, associated with lung congestion on the chest X ray and elevated NT-proBNP levels (2000 pg/ml; normal value <150). Doppler echocardiography showed severe dilation of both left atrium and left ventricle, with severe deterioration of LV systolic function (Ejection fraction of 26%), global hypokinesia and a moderate mitral regurgitation with central jet. A cardiac catheterization was performed, which evidenced an anomalous origin of the left main coronary artery from the right coronary sinus with a proximal lesion of nearly 50%.