A vanishing twin describes the loss of one embryo or fetus in an early multiple pregnancy, often before it can be clearly seen on a later scan, while the remaining pregnancy continues to develop. It is more often noticed after IVF because early scans are done routinely and a multiple pregnancy may be identified before the loss occurs, whereas in natural conception it may pass unnoticed. This can be a difficult and confusing experience emotionally, even though the ongoing pregnancy is usually unaffected in most cases. Your clinical team can talk through what was seen on your scans and, if you would find it helpful, connect you with counselling support.
Also known as: vanishing twin syndrome
Related India guides
Sources
- Federation of Obstetric and Gynaecological Societies of India (fogsi.org)
Last reviewed: 9 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.