Will non-cancerous thyroid removal affect insurance?

When we were shopping for different insurance a couple years ago, they all had one thing in common, they wouldn't insure someone who'd had thyroid cancer or thyroid radiation.
I've had hypothyroidism for 30+ years (been on Synthroid or generic the whole time), now thyroid is full of nodules and some are starting to constrict windpipe, so doctor wants to remove entire thyroid. He did needle biopsies last year, no cancer, and nothing caused him cancer-concern on my ultra-sound yesterday. But some of the nodules were definitely larger than last year, so he recommends removal, which I'm leaning towards.
My question is: if it doesn't involve cancer, will thyroid removal negate my health insurance or make it impossible for me to get new insurance? Couldn't find out anything on my insurance website and don't want to talk to a real person there for fear they will flag my account. Anyone have any experience with this? Thanks!