« Previous Page
Vanishing twin syndrome is a condition in which one of two fetuses
disappears sometime during the first 12 weeks of a pregnancy.
Early in a multiple pregnancy, it is possible for a woman to
miscarry one fetus and to notice some vaginal bleeding or to notice nothing
unusual. Sometimes the embryo or fetus is reabsorbed by the mother's
Vanishing twin syndrome may be caused by too little of the hormone
that supports pregnancy (human chorionic gonadotropin, or hCG). It does not
appear to harm the mother or the surviving twin.
Current as of:
March 16, 2017
Sarah Marshall, MD - Family Medicine & William Gilbert, MD - Maternal and Fetal Medicine
To learn more about Healthwise, visit Healthwise.org.
© 1995-2017 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.