Vanishing twin syndrome

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 body.

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.

Last Updated: July 16, 2009

Author: Sandy Jocoy, RN

Medical Review: Sarah Marshall, MD - Family Medicine & Gregory A L Davies, MD, FRCSC, FACOG - Maternal-Fetal Medicine

related physicians

related services

Bon Secours International| Sisters of Bon Secours USA| Bon Secours Health System

This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Privacy Policy. How this information was developed to help you make better health decisions.

© 1995-2010 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.