[Ultrasound abnormalities of the placenta during triploidy with pre-eclampsia in the 2nd trimester]

A documented case of triploidism which developed to 20 weeks gestation underlines the importance of early ultrasonographic assessment of the trophoblast. Large placentas, especially when pre-eclampsia occurs, should lead to assay of beta-hCG and search for chromosome anomalies. Paternal genomic origin was suggested based on the large volume of the placenta.