Can a fetus in fetu survive outside of its host twin?

And also can the fetus in fetu feel pain, or think for itself? Also how big can it get? I read a story on it that really confuses me. The fetus in fetu was living in a boys stomach then the school nurse noticed movement in the boys abdomen. They took him to the hospital where they removed his parasitic twin. So was the boy basically pregnant, and the twin was a living baby? I don't quite understand.

Written By Nurse009

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