Table 1. Characteristics of the patients and resected nodules.
| Characteristic | CT-guided localization | VAL-MAP | P value |
|---|---|---|---|
| Number of patients | 52 | 67 | – |
| Number of nodules | 56 | 97 | – |
| Age | 61.1±12.8 | 66.3±9.7 | 0.014 |
| Sex (male: female) | 29: 23 | 33: 34 | 0.719 |
| Lesion size (mm) | 10.2±4.7 | 8.4±4.2 | 0.013 |
| Depth (mm) | 12.4±8.7 | 10.1±9.6 | 0.139 |
| Required resection depth (mm) | 32.8±10.4 | 26.8±12.0 | 0.002 |
| Appearance of nodules | <0.001 | ||
| Ground-glass opacity | 32 (57.1) | 26 (26.8) | |
| Solid | 24 (42.9) | 71 (73.2) | |
| Pathological diagnosis | 0.006 | ||
| Primary lung cancer | 32 (57.1) | 31 (32.0) | |
| Metastatic lung tumor | 24 (42.9) | 66 (68.0) |
Data are presented as mean ± standard deviation or n (%). Required resection depth (mm) = depth (distance from the closest pleura) + {[diameter × 2 (tumor <2 cm)] or [diameter + 20 (tumor ≥2 cm)]}. CT, computed tomography; VAL-MAP, virtual-assisted lung mapping.