CD8A and intestinal obstruction: In multivariate analyzes, NLR ≤ 2.8 (HR: 0.094, 95% CI: 0.02–0.45), CD8+ T lymphocyte counts ≤912 per μL (HR: 0.198, 95% CI: 0.044–0.9), III-IV stage (HR: 13.633, 95% CI: 3.824–48.603), and intestinal obstruction (HR: 5.872, 95% CI: 1.369–25.18) were independently related with OS (both P < 0.05, Table 2).