CD274 and metastatic malignant neoplasm in the lymph nodes: In the univariate logistic regression model, the tumor size, lymph node metastasis, and extrahepatic metastasis were not correlated with the number of PD-L1+ CTCs (OR 0.514, 95% CI 0.108-2.456, P = 0.405; OR 0.760, 95% CI 0.238-2.424, P = 0.642; OR 1.765, 95% CI 0.426-7.307, P = 0.433, respectively) and ORR (OR 0.500, 95% CI 0.107-2.327, P = 0.377; OR 0.623, 95% CI 0.183-2.125, P = 0.450; OR 0.367, 95% CI 0.068-1.973, P = 0.243, respectively).