Hi,
I think it's also repeated about an inch from the main site in both directions?
I had a small BP hatchling develop something like that over a short period - but I could physically feel that the rids were spread out and damaged in him.
I still have no definitive answer as to what caused it but I think it was trauma.
An x-ray could certainly tell you a couple of useful things like bone density and any signs of injury.
But, unless it turned out to be a bone density problem, I can't think of any actual treatment the vet could give.
Sorry I can't be of any real help.
dr del