Table 1. Clinicopathological characteristics of patients (n=144).
| n | % | Median | Range | |
| Age (year) | 60 | 41-80 | ||
| Sex | ||||
| Male | 125 | 86.8 | ||
| Female | 19 | 13.2 | ||
| Histopathology | ||||
| Squamous cell carcinoma | 69 | 47.9 | ||
| Adenocarcinoma | 64 | 44.4 | ||
| Pleomorphic carcinoma | 2 | 1.4 | ||
| Adenosquamous carcinoma | 5 | 3.5 | ||
| Large cell carcinoma | 4 | 2.8 | ||
| Stage IIIA subgroups | ||||
| T4N0M0 | 30 | 20.8 | ||
| T3N1M0 | 16 | 11.1 | ||
| T4N1M0 | 19 | 13.2 | ||
| T1N2M0 | 40 | 27.8 | ||
| T2N2M0 | 39 | 27.1 | ||
| Operation | ||||
| Lobectomy | 81 | 56.3 | ||
| Pneumonectomy | 41 | 28.5 | ||
| Lung resection + CWR | 5 | 3.5 | ||
| Bilobectomy | 9 | 6.3 | ||
| Sleeve resection | 8 | 5.6 | ||
| N status | ||||
| N0 | 30 | 20.8 | ||
| N1 | 35 | 24.3 | ||
| N2 | 79 | 54. 9 | ||
| Localization | ||||
| Right upper lobe | 41 | 28.5 | ||
| Right middle lobe | 2 | 1.4 | ||
| Right lower lobe | 17 | 11.8 | ||
| Right hilum | 22 | 15.3 | ||
| Left upper lobe | 28 | 19.4 | ||
| Left lower lobe | 15 | 10.4 | ||
| Left hilum | 19 | 13.2 | ||
| Pleural invasion | ||||
| VPI (+) | 50 | 34.7 | ||
| VPI (-) | 85 | 59 | ||
| PPI | 9 | 6.3 | ||
| N2 distribution (n=79) | ||||
| 2R | 2 | 2.6 | ||
| 4R | 16 | 20.3 | ||
| 3 | 1 | 1.2 | ||
| 7 | 12 | 15.1 | ||
| 9R | 1 | 1.2 | ||
| R-multiple | 14 | 17.8 | ||
| 4L | 2 | 2.6 | ||
| 5 | 14 | 17.8 | ||
| 6 | 7 | 8.8 | ||
| 9L | 2 | 2.5 | ||
| L-multiple | 8 | 10.1 | ||
| Skip N2 metastasis | 7 | 8.8 | ||
| CWR: Chest wall resection; VPI: Visceral pleural invasion; PPI: Parietal pleural invasion. | ||||