Fetal echocardiography of a case of left atrial isomerism (heterotaxy)

Echocardiography of a fetus with left atrial isomerism at 31 weeks' gestation.
(A) Still frame and movie demonstrating a prominent azygos vein to the right of the spine and the descending aorta (DAo). This fetus also has a complete atrioventricular canal defect that is demonstrated by the large primum atrial septal defect (ASD) and an inlet ventricular septal defect (VSD) at the crux of the heart.  (B) Echocardiographic frame that shows the entry of the azygos vein into the RA and no IVC. The right diaphragm (denoted by the three *) separates the right lung and the liver.