What's your diagnosis based on these ultrasound images of the fetal heart?
(Images courtesy of Girish Patel, MD)
4. Ebstein's anomaly
The tricuspid valves are displaced towards the apex of the heart with atrialization of the right ventricle. Hence, the right ventricle is smaller than normal with the increased size of the right atrium. The pericardial space appears normal. Ebstein's anomaly is best detected on a 4-chamber view of the fetal heart.