Table 1 Patient characteristics
Characteristic | No. of patients(%) |
|---|---|
Total | 408 |
Sex | |
 Female | 51(12.5%) |
 Male | 357(87.5%) |
Age | |
 Median | 59.5 years |
 Range | 39–83 |
Tumor length(cm) | |
 Median | 4 cm |
 Range | 0.3–10.5 cm |
Tumor width(cm) | |
 Median | 2 cm |
 Range | 0.3-9 cm |
Tumor site | |
 Upper thoracic portion | 49(12.0%) |
 Middle thoracic portion | 208(51.0%) |
 Lower thoracic portion | 151(37.0%) |
Pathological type | |
 Squamous carcinoma | 376(92.2%) |
 Adenocarcinoma | 29(7.1%) |
 Other | 3(0.7%) |
Differentiation | |
 Low | 112(27.5%) |
 Middle | 204(50.0%) |
 High | 92(22.5%) |
T-staging | |
 T1 | 67(16.4%) |
 T2 | 106(26.0%) |
 T3 | 235(57.6%) |
N-staging | |
 N0 | 205(50.2%) |
 N1 | 116(28.4%) |
 N2 | 45(11.0%) |
 N3 | 42(10.4%) |
LVSI | Â |
 Positive | 85(20.8%) |
 Negative | 323(79.2%) |
PNI | |
 Positive | 72(17.6%) |
 Negative | 336(82.4%) |
Adjuvant chemotherapy | |
 Yes | 168(41.2%) |
 No | 240(58.8%) |