Maybe this will be helpful to you. There is a lot of info about it if you put it in a search engine it.
http://www.drhull.com/EncyMaster/M/mastoiditis.html
Thanks for the reply. I have searched alot. I'm just concerned by the fact that my husbands test have confirmed this and they had yet to treat him for it. He has other "issues" also with his sinuses. Since little attention has been given to this, it leads me to believe the other issue is more serious than this one.