FOXP3 and esophageal squamous cell carcinoma: In the present study, multiple TILs (CD4+ TILs, CD8+ TILs, CD25+ TILs, FOXP3+ TILs, CD4+CD25+FOXP3+ Tregs) and PD‐L1 expression were assessed in tissues specimens of patients with ESCC who underwent curative esophagectomy without any preoperative therapy to assess their clinicopathological characteristics and prognosis.