Centro Clínico de Maternidad Leopoldo Aguerrevere, Caracas,Venezuela.

Case report

The following images show a case of the tetralogy of Fallot diagnosed during a third trimester scan of a 35-year-old woman with non- contributive history.

Images 1, 2, 3, 4: The images show the left outflow tract of the heart. The aorta is clearly overriding the ventricular septal defect and interventricular septum. The image 2 represents a fusion of the image 1 with a drawing explaining the structures visible on the image 1 (RA - right atrium; RV - right ventricle; LA - left atrium; LV - left ventricle; VSD -  ventricular septal defect, Ao - descemding aorta). The images 3 and 4 also shows the aorta overriding the ventricular septal defect and interventricular sepum (ao - aorta).

Images 5, 6: The images show show four-chamber view of the heart. The axis of the heart is deviated to the left. The image 6 represents a fusion of the image 5 with a drawing explaining the structures visible on the image 5 (RA - right atrium; RV - right ventricle; LA - left atrium; LV - left ventricle; Ao - descending aorta).

Images 7, 8: The images show three-vessel view of the heart. The pulmonary artery is thin while the aorta is large (ap - pulmonary artery; ao - aorta; vcs - superior vena cava).

Images 7, 8: The images show color Doppler scans of the heart at the level of the overriding aorta. The flows from both ventricles are directed to the aorta.