If this is a benign (negative FNA biopies) multinodular goiter without symptoms (no choking, trouble swallowing, etc) then this can be monitored despite the size...unless there is significant extension into the upper chest causing deviation of the windpipe or other major structures -- CT scan is needed to document this.
... oops thought I was in the thyroid disorders community not the expert forum. My apologies, ignore my post and let Dr. Lupo answer this for you.
Has your doctor done a Fine Needle biopsy on these nodules? Why does your doctor want to rush in and remove your thyroid if it is functioning normally? Are you have problems swallowing or breathing?
I would ask all of those questions and any more that others may post here. I would also get a second opinion before I let anyone remove anything that may not need to be removed.
I have multiple nodules on my thyroid, one of mine is close to 2 cm with calcification, another is 1.5 cm and hypoechoic, one is quite small and the other is close to 1 cm and a complex nodule. The two larger ones were biopsied, my TSH is 0.489. My biopsy shows benign follicular cells, hurthle cells and hemosiderin macrophages. No surgery has been recommended in my case. I have been given no diagnosis besides a multi nodular goiter and no surgery has been recommended.
If your nodules have not been fully evaluated then I would find a different doctor and have a full evaluation done before letting them cut it out!