<unk>  frequently leads to significant complications in over one-third of affected individuals which often lead to significant morbidity and mortality. Notable complications of<unk>  include narrowing of the<unk>  valve opening, backward blood flow at the<unk>  valve, dilation of the ascending aorta, and infection of the heart valve. If<unk>  regurgitation and dilation of the ascending aorta are noted in someone, they should undergo yearly surveillance with transthoracic echocardiograms if the<unk>  root measures 4.5 centimeters or greater in diameter.
Bicuspid aortic valve
Quadricuspid aortic valve
Flutter valve
Mitral annular calcification
Supravalvular aortic stenosis
Accessory auricle
Overriding aorta
Mitral annular disjunction