If the patient does not know that he or she has a thyroid nodule, the main departments for confirming the diagnosis are endocrinology, head and neck surgery, thyroid surgery, general surgery, otorhinolaryngology-head and neck surgery, etc. If the patient already knows that he or she has a thyroid nodule and needs further confirmation, the main departments are endocrinology to assist in the examination; if the patient needs surgery, it will involve head and neck surgery, thyroid surgery, general surgery, surgical oncology, medical oncology, ultrasound, pathology, laboratory, etc.