EGFR and neoplasm: In the multivariate analysis that included 612 patients, EGFR protein expression (HR = 1.66, 95% CI 1.06–2.60, Wald’s p = 0.028), tumor size (HR = 1.60, 95% CI 1.07–2.40, p = 0.023) and the number of positive nodes (HR = 2.74, 95% CI 1.86–4.04, p < 0.001) retained their prognostic significance for OS (Table 5).