Table 3 CT signs in the ALK-positive and ALK-positive groups
Variables | ALK+ (n = 65) | ALK- (n = 629) | Χ2(t) | P-value |
|---|---|---|---|---|
Tumor size, mm (IQR) | 15 (10, 21) | 15 (12, 23) | 1.101 | 0.271 |
Tumor location |  |  | – | 1 |
 Left upper lobe | 17 (26.2) | 147 (23.4) |  |  |
 Left lower lobe | 10 (15.4) | 103 (16.3) |  |  |
 Right upper lobe | 13 (20.0) | 118 (18.8) |  |  |
 Right middle lobe | 7 (10.8) | 63 (10.0) |  |  |
 Right lower lobe | 18 (27.7) | 198 (31.5) |  |  |
Anatomical type | Â | Â | 1.155 | 0.612 |
 Central | 0 (1.7) | 11 (1.7) |  |  |
 Peripheral | 65 (98.3) | 618 (98.3) |  |  |
CT density | Â | Â | Â | Â |
 Solid nodule | 26 (40.0) | 246 (39.1) | 0.020 | 0.889 |
 GGO | 39 (60.0) | 383 (60.9) | 0.020 | 0.889 |
 CTR | 0.44 (0, 1.00) | 0.66 (0.30, 1.00) | 0.880 | 0.379 |
Irregular | 43/61 (70.5) | 407/547 (74.4) | 0.437 | 0.509 |
Lobulated | 47/61 (77.0) | 402/547 (75.5) | 0.360 | 0.549 |
Spiculation | 44/61 (72.1) | 412/547 (75.3) | 0.298 | 0.585 |
Bubble-like lucency or cavities | 35/61 (57.4) | 270/547 (49.4) | 1.411 | 0.235 |
Pleural retraction | 40/61 (65.6) | 418/547 (76.4) | 3.472 | 0.062 |
Air bronchogram | 24/61 (39.3) | 164/547 (30.0) | 2.252 | 0.133 |