title: Quadricuspid aortic valve associated with severe aortic regurgitation.
abstract: A 57-year old man with severe aortic regurgitation was found to have a quadricuspid aortic valve. Aortic valve replacement was performed successfully with a St. Jude Medical prosthetic valve. On histological examination, the resected cusps showed fibrotic thickening with calcification.
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities* / Q000601:surgery; D001022:Aortic Valve Insufficiency / Q000473:pathology / Q000601:surgery*; D002114:Calcinosis / Q000473:pathology; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged