Whether or not a thick neck is caused by a thyroid nodule is a matter of analysis based on the specific circumstances. A. Obese patients often have more fatty tissue accumulation in their necks, which can manifest as an obvious thick neck, but at this time, if the patient does not find a thyroid nodule in the thyroid ultrasound. In this case, the patient’s thick neck is caused by obesity, and there is no relationship with thyroid nodules. Secondly, patients with hyperthyroidism may have diffuse enlargement of the thyroid gland, accompanied by nodules, resulting in a thick neck, and ultrasound examination may confirm that the thyroid gland is accompanied by multiple nodules. In this case, the enlarged neck is caused by enlarged thyroid gland and nodular hyperplasia. Larger thyroid nodules may be considered for surgical treatment to avoid significant local pressure symptoms and serious complications. Other neck masses, lymph node swelling, metastases, lymphomas, cysts, etc.