When someone finds a nodule on his or her neck, the first reaction is to grow a tumor, right, could it be malignant? With these doubts in mind, they go to the hospital to see the doctor. After the doctor receives your nodule, he or she will first determine where your nodule is growing and make it clear that it is in the thyroid gland. By touching the experienced doctor will have a preliminary judgment on the nature of the mass, whether it is cystic or solid, and whether it is solitary or multiple. The doctor will then arrange for ultrasound, CT, and relevant laboratory tests to be performed. The comprehensive examination will suggest the next step of treatment. Simply put, surgery should be considered in the following cases: 1. single solid nodule greater than or equal to 1 cm. 2.Multiple nodules should be at least larger than 1.5 centimeters and have symptoms of pressure, or the imaging examination suggests that one of the nodules has a malignant tendency. 3.Nodules tend to increase in size in a short period of time. 4. Nodules with hyperthyroidism. In addition, it is found that some patients with multiple thyroid nodules have no malignant manifestations in the preoperative examination, but the pathology suggests that one of the nodules is cancerous.