Transthoracic echocardiographic image showing the four-chamber view. The characteristic malformation of severe Ebstein’s anomaly of tricuspid valve in the right heart is clearly seen with an apical displacement of the septal leaflet of the tricuspid valve, leading to marked enlargement of the right atrium and atrialized right ventricle (ARV). The left ventricle shows prominent apical trabeculation suggestive of non-compaction of the left ventricle. ARV, atrialized portion of the right ventricle (ARV); TV, Tricuspid valve; MV, mitral valve; LV, left ventricle; RA: right atrium.