Table 1. Patient characteristics.
| Parameter | All (n=142) |
|---|---|
| Age (years, median) | 68 [41–87] |
| Sex | |
| Male | 87 |
| Female | 55 |
| BI (median) | 445 [0–3,000] |
| CEA (ng/mL, median) | 3.3 (0.5-559) |
| Tumor appearance (CT scan) | |
| Pure GGN | 2 |
| Part solid GGN | 51 |
| Solid | 89 |
| Histological type | |
| AD | 107 |
| SQ | 20 |
| Others | 15 |
| #12u (pathological) | |
| Normal | 125 |
| Metastasis | 17 |
Data are presented as n or median (range). BI, Brinkman index; CEA, carcinoembryonic antigen; CT, computed tomography; GGN, ground-glass nodules; AD, adenocarcinoma; SQ, squamous cell carcinoma.