I contacted DHs oral surgeon here and had them get the records from his visit yesterday. They did a standard x-ray. DH told them multiple times where the previous cyst was, ABOVE where the root of an upper molar would have formed. There is nothing to see in their x-ray. We need to know if a cyst has formed and if it has he needs it out before it blows through the sinus cavity again. I am afraid if this isn't decided on soon, he won't be able to handle the pressure changes to fly and we are going to have to pick someone to do a pretty intricate surgery out of the phone book.