I have 8 nodules on my thyroid 3 of them are more than 10mm the biggest one is about 19mm my tsh ,t3 and t4 are norma. could it be thyroid cancer?

See endocrine : See a Endocrinologist who specializes in thyroid and let him assess.There may need to be a thyroid scan and a biopsy.Ther are cold and hot type of nodules with cold type that you are more concerned with.95% of solitary thyroid nodules are benign, and therefore, only 5% of thyroid nodules are malignant.However ,The only test that can differentiate benign from cancerous thyroid nodules is a biopsy.