Dramat W Lonie Matki. Utracony Blizniak Pdf -

The phenomenon you're referring to is called "vanishing twin syndrome" or "消失的雙胞胎症候群" in Polish, which translates to "dramat w lonie matki" or "tragedy in the mother's womb." This rare occurrence takes place when one of the twins in a multiple pregnancy dies in the womb, often during the early stages of pregnancy.