A vanishing twin, often known as fetal resorption, is a fetus in a multi-gestation being pregnant which dies in utero and is then partially or fully reabsorbed by the dual.The incidence of this phenomenon is usually known as twin embolisation syndrome or vanishing twin syndrome (VTS), for the reason that 1980s when twin pregnancies had been made seen early on by way of ultrasound.
Often, moderately than being fully reabsorbed, the lifeless fetus will likely be compressed by its rising twin to a flattened, parchment-like state often called fetus papyraceus.
If the fetus is absorbed fully, there are often no additional problems to the being pregnant, apart from first trimester vaginal bleeding. Nonetheless, if the occasion happens within the second or third trimester, critical problems might embody untimely labor, an infection because of the loss of life of the fetus, and hemorrhage. Even on the finish of the being pregnant, a low-lying fetus papyraceus might block the cervix and require a cesarean to ship the dwelling twin.