Back in college, about 10 years ago, I couldn't breathe out of the right side of my nose. For about 3-4 months, I went the med-center and they thought it was a sinus infection and they gave me antibiotics. Every so often, I'd start SHOOTING blood out of that nostril. I knew something was up. One day, I was feeling some sinus pressure, then all of a sudden, it felt like I had been stabbed in the face. The pain was amazing. I seriously wanted to die! I went to the ER and they said, "You have something growing in there! You need to see a specialist!" I went to a EN&T specialist, and they found a golf ball sized growth in my sinus, and it had broken though the wall of skull! 8-0 Seriously, I'll throw my hat in with childbirth or passing stones! (Although I don't slight either one. I DON'T want to trade!)
Luckily it wasn't cancerous, so they were able to go under my lip to get most if it out. They had to take out my right eye to get the rest! I had some crazy Frankenstein stiches on the bridge of my nose near my eye. Got to make some fun "Knife fight" stories.
I also got the treat of having my sinus packed and having the packing removed, which I heard was TERRIBLY painful, but I guess I got lucky. I was shaking like a leaf when they were ready to pull, but it came out with no problem...
I had another scare a few years ago, where I went back for a checkup, and there was another golfball sized growth in the hole that was left from the surgery. Luckily, it was just a pus pocket (Ewww!) that formed in the hole. They had to drill a HOLE IN MY SKULL, in the sinus cavity, to act as a drain. Oddly enough, that sounded worse than it felt, but it was no picnic.