If the venogram shows closure, I would not mess around with it. I would do as JoMar suggests and get a few different opinions. Would think someone COULD do the surgery where you're at - but whether you'd want that is another question. Personally if/when I have to cross that bridge, I'd want NOTHING but the best surgeon I could find.

Chances are (from what I've read extensively) your nerve issues will become worse, but vascular issues better from the surgery. So you're likely trading vascular peace of mind for neurological issues indefinitely - especially once scar tissue forms. Tough call, and I doubt there is a "right" answer. Only the best answer for you. You'd have to pick the lesser of the two evils, I suppose.

Have they said anything about imminent danger or severe risk in the meantime? How did the symptoms progress or go from Neuro to vascular? Did you try self care that produced any relief?