Fig. 3

a S group VS CCRT group. S group, surgical group; CCRT group, concurrent chemoradiotherapy group. The median OS of the S group was 79 months, and the median OS of the CCRT group was 23 months. P < 0.0001 demonstrates a statistical difference. In the S group, the 1-year survival rate was 96.0%, the 2-year survival rate was 80.0%, and the 5-year survival rate was 28.0%. In the CCRT group, the 1-year survival rate was 70.6%, the 2-year survival rate was 48.0%, and the 5-year survival rate was 16.7%. b SA group VS NS group. SA group, radical surgery + adjuvant chemotherapy ± adjuvant radiotherapy group; NS group, neoadjuvant chemotherapy + radical surgery + adjuvant chemotherapy ± adjuvant radiotherapy group. The median OS of the SA group was 56 months, and the median OS of the NS group was not reached. P = 0.266 demonstrates no statistical difference