Prenatal diagnosis of intra-atrial cardiac echogenic foci.

Intra-atrial echogenic foci were detected in 3 out of 15,706 fetuses (prevalence 0.019 per cent). In all cases, they were located in the right atrium. Normal chromosomes and negative TORCH titres were observed in all affected cases. Fetuses with intra-atrial echogenic foci demonstrated adequate intra-uterine growth and had normal neonatal outcome. Intra-atrial echogenic foci seem to represent a normal variant of fetal cardiac development.