Table 2 Comparison of CT features of malignant and benign GGOs
CT features | Malignant GGOs (n = 144) | Benign GGOs (n = 103) | P Value |
|---|---|---|---|
Diameter (mm) | 20.3 ± 7.6 | 21.1 ± 11.6 | 0.428 |
Location | |||
 Upper lobe | 115 (79.9) | 53 (51.5) | < 0.001 |
 Middle lobe | 6 (4.2) | 4 (3.9) |  |
 Lower lobe | 23 (16.0) | 46 (44.7) |  |
Density pattern | |||
 pGGO | 22 (15.3) | 53 (51.5) | < 0.001 |
 mGGO with centric solid component | 89 (61.8) | 27 (26.2) |  |
 mGGO with scattered solid component | 33 (22.9) | 23 (22.3) |  |
Boundary | |||
 Well-defined | 96 (66.7) | 29 (28.2) | < 0.001 |
 Ill-defined | 48 (33.3) | 74 (71.8) |  |
Internal dilated bronchus | |||
 Yes | 89 (61.8) | 13 (12.6) | < 0.001 |
 No | 55 (38.2) | 90 (87.4) |  |
Distribution in relation to bronchovascular bundles | |||
 Type I | 122 (84.7) | 18 (17.5) | < 0.001 |
 Type II | 2 (1.4) | 25 (24.3) |  |
 Type III | 8 (5.6) | 25 (24.3) |  |
 Type IV | 12 (8.3) | 35 (34.0) |  |