[Lani]

PET scans light up wherever more glucose is being used than normal--in bones the cause can be fracture, infection, inflammation, or cancer.


Now I really don't know if the pattern of your PET or the accompanying CT or your lack of pain or tenderness (I suppose since you didn't say) is such that they can rule out stress fracture or other causes with absolute certainty(or even if there is any such pattern) , but since it is a long-weekend and you may not reach your doctor
immediately, how about imagining it is something nicer for now.

Your ideas of how they might try to decide which it is if there is uncertainty ( trying time--with interval healing if fracture--and denosumab and/or a bone scan sound logical. It might even possible they will do a biopsy if it doesn't become clear with time, I suppose. If they do, and it is breast cancer they may find that it has changed(eg er- to er+_
and there might even now be more targets to aim for.

Hang in there and hug your dog.