Do you mean he balloons even when he hasn't found a stenosis, because the ballooning holds the vein more open or something and that helps him find it? (Heck, with the risk of missed stenosis, it would at least help with that!) But wouldn't the more area that is ballooned, there would be more clotting risk at it recovers from the ballooning injury? It is interesting to scrutinize all our doctors' different methods. Right down to the stent/no stent dilemma. Right now there is no best way: who knows? But this is an interesting idea with the azygous.
I hope, Ali888, that you are feeling well after your procedure!
Donnchadh, I think it is the torsion requirements of the neck compared to other areas of the body. Most places where a stent is used don't subject it to much twisting or movement. Also the relative youth of MSers so that the stent has to hold up for the many decades ahead of us. And the importance of these veins. But I am already on record as being cautious about stents.
"However, the truth in science ultimately emerges, although sometimes it takes a very long time," Arthur Silverstein, Autoimmunity: A History of the Early Struggle for Recognition