Temporary resolution of preeclamptic symptoms after intrauterine death of one twin.

In a 34 year old woman with dichorionic twin pregnancy preeclampsia resolved after the intrauterine death of one of the HLA-identical twins and recurred with the growth of the placenta of the surviving twin later in pregnancy. This case gives indirect evidence that the clinical course of preeclampsia is a dose-dependent phenomenon in conjunction with vital placental tissue.