Table 1. Patient characteristics.
| Characteristics | n |
|---|---|
| Number of patients | 29 |
| Gender | |
| Male | 14 |
| Female | 15 |
| Age, years, mean | 69.9 [52–80] |
| cTNM (Ver 7) | |
| cT1bN0M0 | 16 |
| cT2aN0M0 | 12 |
| cT2bN0M0 | 1 |
| Solid/GGO, %, mean | 94.60% |
| Brinkman index (BI) | |
| <400 | 14 |
| ≥400 | 15 |
| Tumor marker, positive | 15 |
| p-stage (Ver 7) | |
| IA | 9 |
| IB | 9 |
| IIA | 5 |
| IIB | 3 |
| IIIA, IV | 3 |
| Histology | |
| Adenocarcinoma | 24 |
| Sq. + others | 5 |
| Diameter of tumor | |
| cm, mean | 3.4±1.3 |
| pl factor, positive | 7 |
| v factor, positive | 13 |
| ly factor, positive | 12 |
| Time of PV dissection | |
| Minutes, mean | 81.6±40.2 |
pl factor, pleural invasion factor; v factor, vascular invasion factor; ly factor, lymphatic vessel invasion factor; PV, pulmonary vein.