Ok, I freely admit this is NOT from my personal case files. It is from a colleague that I work with a few days a week.
So this turtle had an abscess. The pictures below best show it:
Here is a good link for turtle owners: http://www.boxturtlefacts.org/Ear_Infections_in_Chelonians.pdf
What was very cool was seeing the doc give propofol INTO the sinus and slowly watching the turtle go to sleep. FYI, reptiles do everything slowly including heal.
But what was needed was to open this up and flush it out. So once the sedation had taken effect, this is what the outcome was: