Hi,
Yes, there is a lot of hope for long term survival after upper tract involvement of TCC. The usual treatment is surgery, removal of the kidney and ureter. Sometimes chemo might be recommended as well. Most TCC upper tract disease is treated similarly to regular bladder cancer, though the surgery is usually done laparoscopically as with regular kidney cancer. (this approach is being tried in bladder cancer too but still very new in that context).
You would do well to contact an expert TCC/upper tract disease because of the relative rarity of it, most doctors won't know the best way to go. Experience counts. But like Cynthia, I know people doing well, many years down the road.
The common wisdom says that the outcome of upper tract TCC depends much upon the grade and stage of the tumor discovered, the earlier the dx the better. As with all cancer.
Wishing you well,
Wendy