Bizi, Sometimes the imaging just doesn't get it right, and the surgeon can't see what's really going on until they get in there. It's not uncommon.

I'm sorry that your blockage is worse than initially thought
I wish you didn't have to have this invasive surgery, but I'm glad that it will be able to take care of your condition better and more safely

Will you be having general anesthesia this time?

How are you feeling today?