What was that medical story about the man who they found part of a skull in his stomach?

Question

I once heard about a guy who doctors found a skull in his stomach. He was supposed to be a twin but a mutation occured and part of his brothers skull was found in his stomach
Anyone

Answer 1

I was actually a boy. He was found to have a calcified twin in his abdomen. It's called Fetus Infeteu, which means Invisible Fetus. It happens when one twin absorbs the other one. The absorbed twin can grow some, until the other twin isolates it and starts to build a case of calcium around it. There is more then one case of this. It's pretty interesting to learn about.