Collection of blood between the chorionic membrane overlying the placenta and the villous chorion (fetal aspect of the placenta) is term as preplacental hematoma ¹.  The source of bleeding is possibly from fetal vessels and may be associated with maternal hypertension. They have less clinical significance. However, the patient may present with vaginal bleeding or uterine contraction resulting in abortion, intrauterine growth restriction (IUGR), preterm labor, placental abruption and fetal distress.

On the other hand, retroplacental hemorrhage is behind the placenta, separating placenta from the uterine wall.