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This occurs when a twin or multiple disappears in the uterus during pregnancy as a result of a miscarriage of one twin or multiple. The fetal tissue is absorbed by the other twin, multiple, placenta or the mother. This gives the appearance of a “vanishing twin.” How is Vanishing Twin Syndrome identified?Does vanishing twin syndrome increase the risk of cerebral palsy?
A 1997 study found that babies who lived through vanishing twin syndrome could be at higher risk of cerebral palsy. A later study didn't confirm this risk. It found that the risk for these babies was similar to the risk for other twins and babies born from multiple pregnancies.What happens when a twin disappears during pregnancy?
Most often the vanishing twin is absorbed by the mother's body so that there is no evidence of the twin at the time of delivery. Sometimes, if a twin vanishes between 15 and 20 weeks gestation, a fetus papyraceous remains.What is the difference between parasitic twins and Vanishing twins?
Parasitic twins differ from vanishing twins. With vanishing twins, early ultrasound or fetal heartbeat confirms the presence of two fetuses. But in later tests, only one fetus remains. The vanishing twin is absorbed by the remaining twin, the placenta, or the mother’s body.