CTICasesQuadricuspid Aortic Valve
Imaging findings
CT angiography of the heart shows a congenital quadricuspid aortic valve with four distinct cusps and commissures (forming a 'four-leaf clover' shape on diastole). The left ventricle is severely dilated and hypokinetic secondary to chronic aortic regurgitation.
Key takeaways
A quadricuspid aortic valve is a very rare congenital anomaly. Unlike bicuspid aortic valves, which frequently lead to aortic stenosis, quadricuspid valves typically present with progressive aortic regurgitation in adulthood. Surgical valve replacement or repair is indicated when left ventricular dysfunction or severe dilation occurs.
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