title: Early calcification and obstruction of a mitral porcine bioprosthesis.
abstract: A patient is described in whom severe prosthetic valvular stenosis developed ten months after mitral valve replacement with an Angell-Shiley porcine heterograft. At emergency operation, calcification of the prosthesis was revealed. Early calcification and stenosis of a porcine heterograft valve is a life-threatening complication that must be recognized promptly and treated by emergency valve replacement.
mesh_terms: D000293:Adolescent; D001705:Bioprosthesis / Q000009:adverse effects*; D002114:Calcinosis / Q000209:etiology*; D003251:Constriction, Pathologic; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000601:surgery; D012214:Rheumatic Heart Disease / Q000150:complications; D013997:Time Factors