Mitral valve agenesis is a rare congenital heart malformation defined as an agenesis or severe hypoplasia of both mitral valve leaflets (complete agenesis) or one of the leaflets (partial agenesis). Complete mitral valve agenesis presents in the neonatal period with symptoms of severe mitral regurgitation and is rapidly fatal unless surgically treated. It is frequently associated with other heart malformations. Partial mitral valve agenesis may present at various ages, usually with symptoms of mitral regurgitation.
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familial mitral valve prolapse
MONDO:0008004
congenital anomaly of the mitral subvalvular apparatus
MONDO:0015109
mitral atresia disorder
MONDO:0015249
congenital mitral stenosis
MONDO:0020398
congenital hypoplasia of the mitral valve annulus
MONDO:0020399
congenital supravalvular mitral ring
MONDO:0020400