MaladyNews: two fetuses found inside newborn

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"Basically, it's a case of triplets, but two of the siblings grew in the other," says doctor.

Fetus-in-fetu is a type of parasitic twin, wherein a developing fetus essentially gets trapped inside of another fetus. The parasitic twin, lacking its own brain and heart, feeds off of the blood supply of the host twin.

A true fetus-in-fetu must be distinguished from a teratoma.

Case history from TheFetus.net, which discusses fetus-in-fetu at length.




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