CD274 and neoplasm: In our study, no statistical significance was detected between tumor extent (T) and PDL-1 expression in both (T) and (TILs) but it was noticed that the expression of PDL-1 in lymphocytes was inversely proportional to the tumor extent (invasion)100% of T1, 50% of T2, 40.5% of T3 and 23.1% of T4 were positive.