Cooper, not good (final update last page)

The vet took out three teeth yesterday back three upper. The vet said the teeth just slid out with roots intact. We have been fighting a sinus infection for the last couple of weeks and could not figure out what was going on. He had his teeth cleaned at the end of February and they looked good. He has massive bone loss and we were not sure if it was the autoimmune disease or Cancer. He is on pain medication and antibiotics. Cooper is only 4 years old, I adopted him about 2 years ago.