<unk>  is a condition in which all or part of the placenta or membranes remain in the uterus during the third stage of labour.<unk>  can be broadly divided into: * failed separation of the placenta from the uterine lining * placenta separated from the uterine lining but<unk>  within the uterus A<unk>  is commonly a cause of postpartum haemorrhage, both primary and secondary.<unk>  is generally defined as a placenta that has not undergone placental expulsion within 30 minutes of the baby’s birth where the third stage of labor has been managed actively.
Retained placenta
Circumvallate placenta
Fetal-maternal haemorrhage
Uterine malformation
Placental disease
Placental insufficiency
Umbilical cord prolapse
Wandering womb