Figure 2

Kaplan–Meier plot of cancer specific survival according to the number of lymph nodes analyzed in patients staged by the AJCC 8th edition manual. Analysis performed in patients of the stage IIIC (Log-Rank χ2: 56.60; p < 0.0005; n = 3222) (A) and IVA (B) (Log-Rank χ2: 29.97; p < 0.0005; n = 2342). The 95% confidence intervals are represented by the colored outline around the curves.