Atrioventricular valve duplication is a rare congenital cardiac anomal
y. The anomaly is usually recognized as an incidental finding at autop
sy, open heart surgery, or two-dimensional echocardiography. In this a
rticle we present the transthoracic and transesophageal presentation o
f a case of mitral and a case of tricuspid valve duplication. The hemo
dynamic consideration of the lesions is discussed with a review of the
literature.