Bicuspid Aortic Valve Aneurysm

Congenitally abnormal aortic valves are defined morphologically according to the number and type of cusps and commissures. The bicuspid aortic valve, first recognized by Leonardo da Vinci in the early 16th century, is the most common congenital anomaly to which that structure is subject. The estimated incidence is 0.9% to 2% of the general population, or a prevalence in the United States of ≈4 million. Two varieties of bicuspid aortic valves are based on commissural fusion, namely, fusion between the left …