Fig. 11.
These villi, from the same placenta as shown in Figs. 4, 5, and 7, show chronic villous changes of FTV at the margin of a much larger lesion. The villi clustered at left are avascular and hyalinzed, in contrast to some adjacent normally perfused villi at right. The fetus associated with this placenta experienced intrauterine death just 36 hours before delivery. There were both old and recent thrombi in the fetal vessels, and multiple clusters of hyalinized avascular villi were present in this placenta. The intravascular clotting injury in this placenta began many days, possibly even weeks, before the fetal death. No symptoms were detected during the course of this carefully monitored pregnancy (hematoxylin-eosin, original magnification ×200).