Post the images, shipshape, (only if you are comfortable with that)!
I am sorry to hear that you haven't felt improvements.
30% might be smaller but it's still a significant stenosis. In veins, a 30% stenosis has a bigger impact than a 30% stenosis in an artery would.
Some people have immediate improvements, some people have gradual improvements, some have both, some unfortunately have neither. Eventually they'll be able to better predict who going into this will have what results, but now it seems almost random.
Renal veins are blocked in about 1 out of 75 patients based on what Dr. Sclafani has found. So, odds are most of us are in the 74 out of 75 that did not have a renal issue. If it was blocked, then the blood flow that the renal vein would have carried gets added to the flow that the azygous carries, and if the azygous itself is blocked, it is not good. Some doctors check the renal veins but many do not.
In Dr. Sclafani's thread, he treated someone's external jugulars. I'll find it if I can. The reason to treat them would be because, if there is a blockage in the EJVs, then the flow they would have carried has to reroute and get out another way. I haven't heard of anyone besides Dr. Sclafani treating an external jugular, but then again we don't have access to most doctors the way we do him.
Are you on an anticoagulant regimen? Sometimes people can restenose or clot even overnight after the procedure, which can lead to them thinking they just haven't had improvements when really they needed further care for complications. Some IRs do an ultrasound the next morning, which can catch some of these patients.
Please do not consider any of this to be medical advice!!