The primary treatment for thyroid cancer is generally surgical intervention. In this operation, the entire thyroid gland or the affected part is removed. If the disease has spread to the lymph nodes, these nodes may also need to be surgically removed. In the post-operative period, an additional treatment called radioactive iodine therapy (atom therapy) may be applied for certain types of thyroid cancer. The need for this treatment is determined by the attending physician, taking into account pathology results and the risk of disease recurrence. Before radioactive iodine therapy, it may generally be necessary to discontinue thyroid medication and follow a special diet. During the treatment, due to the risk of radiation emission, the patient needs to be isolated, and afterward, radiation precautions must be taken for a certain period to protect those around them. Following thyroid surgery, lifelong oral thyroid hormone therapy is administered to meet the body's thyroid hormone needs and prevent disease recurrence. Additional treatments such as chemotherapy and radiotherapy are generally required only in advanced stages or rare cases, such as anaplastic thyroid cancer.