CD4 and neoplasm: There was no significant difference in CD69+ marker expression between primary tumour and sentinel node (p-value > 0.05; primary tumour vs. sentinel node: CD4+CD69+ 42.31 ± 28.34 vs. 40.55 ± 14.54, respectively and 47.66 ± 26.90 vs. 37.48 ± 18.12, respectively) (Fig. 1A,B).