Table 4.
Baseline characteristics of the patients with lung nodules.
| Malignant lung nodules (n = 459) | Benign lung nodules (n = 285) | P value | |
|---|---|---|---|
| Size of lesions, n (%) | <0.001 | ||
| φ≤8 mm | 83 (18.1) | 116 (40.7) | |
| 8 mm <φ≤20 mm | 271 (59.0) | 133 (46.7) | |
| 20 mm <φ≤30 mm | 105 (22.9) | 36 (12.6) | |
| Number of nodules, n (%) | 0.103 | ||
| Single | 260 (56.7) | 144 (50.5) | |
| Multiple | 199 (43.3) | 141 (49.5) | |
| Composition, n (%) | <0.001 | ||
| GGO | 41 (8.9) | 26 (9.1) | |
| pGGN | 103 (22.4) | 21 (7.3) | |
| mGGN | 214 (46.6) | 15 (5.2) | |
| Solid | 101 (22.0) | 223 (78.2) | |
| Pathologic type, n (%) | |||
| Adenocarcinoma | 312 (68.0) | ||
| SCC | 39 (8.5) | ||
| AIS or MIA | 103 (22.4) | ||
| Neuroendocrine | 5 (1.1) | ||
| Lung benign tumor | 19 (6.7) | ||
| AAH | 141 (49.5) | ||
| Inflammatory lung nodules | 72 (25.2) | ||
| Other lung nodules | 53 (18.6) | ||
| Stage of lung cancer, n (%) | |||
| 0 (AIS) | 43 (9.3) | ||
| I | 302 (65.8) | ||
| II | 51 (11.1) | ||
| III | 31 (6.8) | ||
| IV | 32 (7.0) | ||
| Imaging features | <0.001 | ||
| Vessel sign | 361 (78.6) | 24 (8.4) | |
| Spiculation sign | 179 (39.0) | 42 (14.7) | |
| Lobulated sign | 207 (45.1) | 51 (17.9) | |
| Pleural indentation | 154 (33.6) | 37 (13.0) | |
| Bubble-like sign | 93 (20.2) | 26 (9.1) |