MKI67 and neoplasm: There was no significant correlation of sEGFR with histological tumour grade (G1/G2/G3; Spearman’s rho of −0.003; p = 0.972), Ki67 (Spearman’s rho of −0.004; p = 0.956), BMI, tumour size (Spearman’s rho of −0.011; p = 0.876), lymph node metastasis (Spearman’s rho of −0.090; p = 0.225), nor stage (Spearman’s rho of −0.045; p = 0.522).