Abnormalities: Tetralogy of Fallot (TH-10)

This is a case of tetralogy of Fallot at approximately 22 weeks of gestation.

The video clip corresponds to a transverse sweep through the fetal chest starting from the level of the 4-chamber view to the upper mediastinum. The four chamber view is essentially normal but shows an echogenic focus. The ventricular septal defect can only be seen at the level of the 5-chamber view. The three-vessel view is abnormal, the aorta is more anterior than usual and the pulmonary artery smaller than he aorta. The aortic arch is left-sided.