characteristic | Â | No.a(N= 63) | % |
---|---|---|---|
Age/years(Median,range) | Â | 58 (37-76) | Â |
Sex | Â | Â | Â |
 | Male | 40 | 63.5 |
 | Female | 23 | 36.5 |
Tobacco use | Â | Â | Â |
 | Current | 22 | 35 |
 | Former | 12 | 19 |
 | Never | 29 | 46 |
Histology | Â | Â | Â |
 | Adenocarcinoma | 34 | 54 |
 | Squamous cell carcinoma | 20 | 32 |
 | Othersb | 9 | 14 |
Stage | Â | Â | Â |
 | StageI | 30 | 48 |
 | StageII | 11 | 17 |
 | StageIII | 17 | 27 |
 | StageIVc | 5 | 8 |
Lymph node metastasis | Â | Â | Â |
 | N0 | 42 | 67 |
 | N1/N2 | 21 | 33 |
Pleural invasion | Â | Â | Â |
 | Negative | 43 | 68 |
 | Positive | 20 | 32 |
Lymphovascular invasion | Â | Â | Â |
 | Negative | 51 | 81 |
 | Positive | 12 | 9 |
Histologic differentiation | Â | Â | Â |
 | Well/Moderate | 30 | 48 |
 | Poor | 26 | 41 |
 | not availabled | 7 | 11 |