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Patients with lack of PD-L1 expression in both tumor cells and stromal reactive lymphocytes showed worse overall survival than those with the PD-L1-positive expression in tumor cells and/or stromal reactive lymphocytes (P = 0.02). CONCLUSIONS PD-L1-positive expression in stromal reactive lymphocytes, rather than in tumor cells, is associated with a longer survival in patients with ESCC. BACKGROUND Outcome assessments that evaluate post-transection nerve repair do not often correlate with one another. The aims of this study were twofold