Tonyx2 - I had surgery to 'expand' my sinuses due to recurrent infections (will not go into further details re why they needed to be expanded because it's very unpleasant) and although it gave me temporary respite, the problems returned within 6 months. Considering the three weeks of swelling/bruising/pain and the risk of general surgery as a whole, I wouldn't make the same decision again.
But I must stress that what happened to me may very well not happen to you. As I said in my previous post, everyone is different and I wish you the very best of luck with your surgery.
Kaz