Analyzes of prognostic parameters, including tumor diameter, tumor differentiation grade, and depth of invasion, revealed a mean tumor diameter of 5.9 ± 3.3 cm in PD-L1 positive cases, which was slightly lower than in PD-L1 negative cases with a mean tumor diameter of 6.1 ± 4.1 cm (p = 0.851; Table 2). Here, CD274 is linked to neoplasm.