I am unsure about exactly what your doctor is referring to, unfortunately.

Following radiation therapy to the brain, the bones of the skull may be at increased risk of something referred to as osteoradionecrosis, which is a weakness of the bone due to death of the bony tissue from radiation exposure, although this a very uncommon problem with modern techniques of radiation therapy. (I cannot think of any complicaitons of chemotherapy that would specifically affect your skull.) Assuming that you have not also undergone brain surgery, I cannot honestly say that I understand what your oncologist is referring to.

I would suggest that you ask your radiation therapy doctor to be more specific in discussing these concerns.

Sincerely/ Robert A. Wascher, MD, FACS

http://doctorwascher.com