Man fights to keep bullet in head

As if that title alone wasn't odd enough, here's the rest of the article.

A search warrant has been issued in the US for a potentially vital clue to a violent crime - a bullet lodged in a teenager's head.

Sounds ridiculous enough right? No big deal, this kid has a bullet in his head so he's bound to want it removed, we'll just examine it once that happens and see if it came from this other guy's gun. Simple right? Apparently not. His lawyer is stating it is a breach of his civil rights. It represents an unreasonable search. I'm not sure this would be considered unreasonable if the man wanted the bullet removed for medical purposes. If he doesn't mind it being there and doesn't want to have any surgery since it's not harming him at the moment, then I guess I could see it being such a case. Imagine if someone was forcing you to have a surgery you didn't want. You wouldn't like that either. I think this might fall some where along the lines of freedom from self incrimination. That sounds about right. Any other thoughts?