Count me in, Cort. I found out just 3 or 4 years ago I have an empty sella. Sounds comical to say it in that way, because as usual the medical terminologists who invent the names for things that afflict us seem bound and determined to ruin our self-esteem. If I say to people "I have an empty sella" they either respond with "Well that explains your personality," or look at me like I just said "I have an I.Q. of 12." The way I discovered this "empty saddle" was interesting. I had gone to an Endocrinologist because some of my hormone tests were whacked out. He said in passing "it would be rare if you had an empty sella." After he explained what that meant I asked him "can you test for that?" Turns out a simple MRI can reveal them, as your images confirm, Cort. But the Doctor wouldn't run the test! I finally said to him, "I am INSISTING you take a look inside because I think I have an empty sella!" He said, "Well, if you put it like that. I'll do it just to prove you wrong."
Later of course he had to eat humble pie. But the point is, I KNOW I did not have an empty sella before I got hit with this disease. Is ME/CFS causative, I'm not sure. But it is just another "sign" to me that these viruses we battle are insidious, and seem hell-bent on crossing the blood brain barrier, and getting to our "master cylinder."