It may be useful at this moment to continue our discussion of useful terms. What exactly is a "vanishing" twin?
A pregnancy starts with two gestational sacs, made visible on ultrasound at an early stage and when a second scan is made at a later stage one of them has disappeared. It is a real, physical event, made visible only on ultrasound and consequently only discovered in the 1980s. It is subject to many misconceptions:
- It is NOT a fantasy on the part of the survivor or anything to do with the paranormal
- It is NOT the name of a psychological syndrome, such as is described here.
- The twins are NOT removed from the womb by aliens and connected with the work of the so-called "Illuminati" as described here.
- It is NOT the same thing as "twin embolisation syndrome", as indicated here