There was no correlation between PD-L1 negative and positive patients based on clinicopathological characteristics, including age, sex, tumor size, multifocality, surgical margin, pT stage, pN stage, initial lymph node metastasis, recurrence, and relation with chronic lymphocytic thyroiditis (p>0.05). The gene discussed is CD274; the disease is metastatic malignant neoplasm in the lymph nodes.