Calcification of the Atrioventricular Node in a Fetus Affected by Congenital Complete Heart Block

At 18 weeks of gestation, a 28-year-old woman with known connective tissue disease had a fetal echocardiogram that showed a complete atrioventricular block and endocardial fibroelastosis of the right ventricle with a focal hyperechogenic area at the crux cordis and mild pericardial effusion (Figure, a). At 22 weeks, the pregnancy was interrupted without complication, and the mother at present is well. a, Horizontal cut of the …