Conclusion:
Accessory mitral valve is a rare congenital heart anomaly. In
echocardiography, it is seen as mitral valve mass and can present with
or without significant LVOT stenosis. AMV is seen mostly with other
congenital anomalies such as bicuspid aortic valve.
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10.4081/rt.2009.e35Figures and movie clips legend :Figure 1:
Long axis view (143°) at transesophageal echocardiography showed large
cyst like mass at ventricular side of anterior mitral leaflet during
systole.
Figure 2:
Long axis view (120°) at transesophageal echocardiography showed large
cyst like mass at ventricular side of anterior mitral leaflet during
systole.
Movie clip 1:
Transesophageal echocardiography showed large mobile cyst like mass
attached to anterior mitral leaflet
Movie clip 2:
Transthoracic echocardiography showed large mobile mass attached to
anterior mitral leaflet protrude to left ventricle outflow tract
during systole