Article Figures & Data
Figures
- Fig.1.
Survival curves for patients with more and less than 6 LNs resected. The 5-year survival rates were 29.4% and 24.8%.
- Fig.2.
Survival curves of patients with metastatic LNs in different regions. The 5-year survival rates of N1, skip N2 and continue N2 patients were 12.4%, 14.7% and 7.0%.
- Fig.3.
Survival curves of patients with single-station metastatic LNs and multiple-station metastatic LNs. The 5-year survival rates were 13.9% and 7.3%.
- Fig.4.
Survival curves of patients with a different number of metastatic LNs. The 5-year survival rates of 1~2 LNs and more than 2 LNs were 12.4% and 8.3%.
- Fig.5.
Survival curves of patients with a different metastatic ratio of LNs. The 5-year survival rate were 16.7%, 13.5%, 6.8% and 2.0%, respectively.
Tables
Characteristics Number Percentage (%) Gender Male 1090 69.2 Female 485 30.8 Age <70 years 1417 90.0 ≤70 years 158 10.0 Smoking history Yes 1012 64.3 No 563 35.7 The type of histology Squamous cell carcinoma 914 58.0 Non-Squamous cell carcinoma 661 42.0 Stage I 852 54.0 Clinical stage Stage II 330 21.0 Stage III 393 25.0 N0 902 57.3 N Stage N1 322 20.4 N2 351 22.3 Number of LNs resected ≤6 649 41.2 >6 926 58.8 0 897 57.3 Number of metastatic LNs 1~2 437 27.7 >2 241 15.3 ≤25% 270 39.8 Metastatic ratio of LNs 25~50% 201 29.6 50~75% 80 11.8 >75 127 18.7 No metastatic LNs 902 57.3 The distribution area of metastatic LNs* N1 322 20.4 Skip N2 161 10.2 Continue N2 190 12.1 ↵* Skip N2 only included metastatic LNs in the mediastinum and without metastatic LNs in the region of N1; continue N2 included metastatic LNs in the mediastinum and the region of N1.
Variable Favorable factors Unfavorable factors P value Age <70 years ≥70 years 0.039 Sex Male Female 0.902 Smoking history Yes No 0.416 Histologic type Squamous carcinoma Non-squamous carcinoma 0.041 Clinical stage Stage I Stage II 0.000 Stage I Stage III 0.000 Stage II Stage III 0.013
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