Evaluation of the 7th edition of the TNM classification in patients with resected esophageal squamous cell carcinoma

Figure 1 Survival curves of patient subgroups stratified by pT, pN and pM descriptors according to the 7^th edition TNM classification. The 5-year survival rate, the number of patients in each subgroup, and the P-value for comparison between each adjacent subgroup are indicated. A: With respect to the pT descriptor, there were significant differences between each adjacent subgroup except between pT3 and pT4 (P = 0.405); B: With respect to the pN descriptor, there were significant differences between each adjacent subgroup; C: With respect to the pM descriptor, there were significant differences between pM0 and pM1.

Figure 2 Survival curves for patient subgroups stratified by pG (histologic grade) and cancer location according to the 7^th edition TNM classification. The 5-year survival rate, the number of patients in each subgroup, and the P-value for comparison between each adjacent subgroup are indicated. A: With respect to pG, there was no significant difference between each adjacent pG classification; B: With respect to cancer location, there was no significant difference between each adjacent caner location classification.

Figure 3 Survival curves for patient subgroups stratified according to the 7^th edition TNM pStage groupings. The 5-year survival rate, the number of patients in each subgroup, and the P-value for comparison between each adjacent subgroup are indicated. The survival curves showed stepwise reduction as the pStage increased, and there were significant differences between each adjacent pStage group.