Smaller tumor size is associated with poor survival in T4b colon cancer

Figure 3 Kaplan-Meier curves for colon cancer patients from the Surveillance, Epidemiology and End Results database, stratified by tumor size. A: T4bN0-2M0 group; B: T4bN0M0 subgroup; C: T4bN1M0 subgroup; D: T4bN2M0 subgroup. Survival rate decreased significantly with decreasing tumor size in the case of T4bN0-2 patients (P < 0.001). In subgroup analysis, survival rate decreased significantly with decreasing tumor size in T4bN0 patients (P = 0.024), but this association was not significant for T4bN1 (P = 0.182) or T4bN2 (P = 0.191) patients.