Vascular means it has blood vessels running through it and blood supply. This may increase the possibility of it being cancer (but it could also be non-cancerous).
After the thyroid is removed you will know. But even if it were cancer, please be reassured that thyroid cancer is one of easiest to treat.
Let us know how you go.
Try not to worry as thyroid cancer is one of the easiest to cure.
Your dr is removing your thyroid and will send it off to pathology. Most thyroid cancers are cured with removal anyway......so please try to relax and not worry.
Stay positive. I would have passed on the FNA too and said take it out!
When are you having surgery?