There are very rare cases happening where a mother, while pregnant, has two umbilical cords inside the womb. One might be connected to a baby, whereas the other one can be connected to a certain mass that can be identified as the baby’s parasitic twin. This condition is referred to as “fetus-in-fetu,” a very rare condition wherein the body of a fetus, there is another one that is malformed and usually parasitic. How does fetus in fetu happen?
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