Here are a lot of x-rays of various implantable chips and magnets :
In x-rays dense things like metal, bone and glass show up white and very clear. What you have is pretty much the opposite, a blurry dark spot amongst a bunch of other spots. It’s either fat or some bodily fluid or something like that.
Also if the white part is a bone then this spot is waaay to deep and small to be useful in any way.