I think it's pronounced duodenum.

[Which Dylan pronounces the right way, apparently "dew-AH-dee-num"]

Well, first of all, it looks like it's part of the small intestines, so it being involved would probably something like damage to the midsection, around the stomach.

And second, maybe...that level of detail won't be necessary? All things considered, so long as we know what is and isn't damaged, I don't think we need to know the name of every bit of a human body.