Hi Mawalton,
After radiation treatment, I developed an infection in my jaw that went undiagnosed for about 6 months and took another 3 months to heal with significant amounts of antibiotics (pencillin). Fortunately, it never returned.

I'm wondering if you should get a second opinion and see what alternative antibiotics might be tried and whether there are other alternatives to major surgery. Is your husband being treated at a comprehensive cancer center? If not, you might want to find one nearest to you and get a second opinion there. Best, Sheldon