As shown in Table 1, PD-L1 expression in TC mostly occurred in the right colon, adenocarcinoma, and dMMR (p < 0.05) and had no significant correlation with patient age, gender, histological grade, lymph node metastasis, and TNM stage (p > 0.05). The gene discussed is CD274; the disease is metastatic malignant neoplasm in the lymph nodes.