I have 20% thyroid cancer in left nodule it remove already i i'm cancer free now or we need to remove the right thyroid also thx ?

Please clarify: Hi. We don't grade thyroid cancer by percentage of a nodule involved. If you have thyroid cancer, you have it. If the cancer was a microfocus, it can be ignored. If the nodule was cancer, depending on nodule size, you may need a completion thyroidectomy followed by 131-iodine therapy. That landscape is somewhat in transition. Speak with an experienced endocrinologist who can see path report.