Why do you ask if I drove here?

To conclude, for now, the ongoing upper maxillary saga, I went to the Ear/Nose/Throat guy yesterday and he doesn't know what it is either. But he knows what it's not, and that includes sinus infection, tumor, egg sac, and bone irregularities. So that's good, I guess. And now I've had a CT scan of my face and skull, which was pretty interesting.

I'd been wanting one of those just because it seems like I've had a lot of sinus issues over the past few years, and I was picturing my sinus cavities as these crowded gunk-filled mazes ready to flare up and wreak havoc at the first sign of a virus or pollen. Apparently that's not the case. I have a lot of air in my head.
[Insert joke of choice here]
He said my sinuses looked large and healthy and it was obvious that I grew up in a rural setting and never suffered from sinus problems or infections as a kid.

Anyway, since nobody has any idea, and it's more just annoying than a problem, we do nothing now. And if it doesn't go away as mysteriously as it arrived, then he'll either blame my dentist or send me to a nerve specialist. Neat.

As long as it's not a tooth problem, cancer, or an egg sac, I'm fine. And now I know what the bones in my inner ear look like. And that the CT-scan technician validates parking.