Just spoke with the vet. Looks like one upper canine is infected; the canine roots do go up into the sinus cavity. NOthing else is showing up in any of the xrays.

I had the option to try treating it with another antibiotic (Baytril) and then, if that didn't work, have the tooth removed. But at age 10, every time se has anesthesia becomes a bigger deal, so I decided to have the tooth removed today. I can call to see how she s about 4 PM, and she should be coming home today.

Let's hope this was it!