I'm so glad that you had the procedure, but somewhat nonplussed that you did not find some relief. Do give it some time. Costumesnational has found that things improved after seemingly no benefit, and so I hope is the same for you. The high stenoses, such as you have, are the ones that make me wonder. It seems that it is the downstream that often affects the higher effects.
Will you go for a follow-up? Perhaps, down the road they will look at the azygos again. I've had "a bulge", "a bend", a bifurcation, and I suspect something amiss there.
I fervently hope that you have some improvement in short time.
My name is not really Johnson. MSed up since 1993