Congenital cardiac abnormality
Less than 1% of all congenital cardiac defects
Malformation of tricuspid valve and right ventricle 
Septal and posterior leaflets of tricuspid valve adhere to underlying myocardium
Functional annulus of tricuspid valve displaced toward right ventricular apex
Portion of the right ventricle is 'atrialized' with dilation and hypertrophy or thinning of the wall
Anterior leaflet of tricuspid valve may be redundant or tethered
Right AV junction dilated
Right-to-left cardiac shunt
Septal and posterior leaflets of tricuspid valve adhere to underlying myocardium
Functional annulus of tricuspid valve displaced toward right ventricular apex
Portion of the right ventricle is 'atrialized' with dilation and hypertrophy or thinning of the wall
Anterior leaflet of tricuspid valve may be redundant or tethered
Right AV junction dilated
Right-to-left cardiac shunt
Ebstein anomaly
Other cyanotic congenital heart disease
Tricuspid atresia
THE MISFITS [12]
Tetralogy of Fallot
Trauma
Transposition of the great arteries
Heart