Table 2 The association among PD-L1 expression in each part of the tumor
| Â | Intraepithelial PD-L1 | Tumor PD-L1 | |||||
|---|---|---|---|---|---|---|---|
Low expression (%) | High expression (%) | p-value | Low expression (%) | High expression (%) | p-value | ||
Stromal PD-L1 | Low expression | 193 (93.7) | 13 (6.3) | <  0.001 | 190 (92.2) | 16 (7.8) | 0.566 |
High expression | 29 (69) | 13 (31) | Â | 37 (88.1) | 5 (11.9) | Â | |
Intraepithelial PD-L1 | Low expression | Â | Â | Â | 203 (91.4) | 19 (8.6) | 0.697 |
High expression | Â | Â | Â | 24 (92.3) | 2 (7.7) | Â | |