Hi Billy,
My layman’s impression is that skull bone metastases can be treated with radiation and sometimes also with surgery, depending on the specifics of the case. From the experiences of patients with bone mets who have posted on the boards, it seems fairly common to have a short course of radiation to stop the mets from progressing and to relieve pain.
This is not a very common met site for cholangiocarcinoma, it appears. You might find more information looking at the more common cancers. This is disappointing news for you and Kathy – hopefully, her doctors will come up with a good treatment solution quickly.
Take care, regards, Mary