whereby

Whereby is not wrong in that sentence. It means the same as "by which" or "in which" or "as a result of which". Where did you get the idea it was wrong?

When he was a child, he had a rare congenital condition as a result of which some of his internal organs were not in their normal positions.

"Whereby" is correct, but old fashioned.

I'd substitute "in which".

Agreed, Noddy, and not only is it old fashioned, but it is often used in the UK by pompous people who wish to sound "clever".

Contrex--

Stateside, "whereby" is generally used as an attempt to buffalo someone with pretentious legalese.

Yoong--

One of the metaphor references of the Old West is a stampeding buffalo herd, running down everyone in its path. "To buffalo" means "to intimidate".

Thanks, Noddy.

When he was a child, he had a rare congenital condition whereby some of his internal organs were not in their normal positions.

How about . . .

When he was a child, he had a rare congenital condition so some of this internal. . . . . position.


P.S. Organs are "in position" (in place)

Doesn't make sense. What do the dots mean?

The dots mean I was too lazy to type the rest of the sentence.

I was trying to show the use of the word "so."