Table 2 Nodular characteristic of CT in validation cohort 2 BPN benign pulmonary nodule, MPN malignant pulmonary nodule, P X 2 test
Nodular Characteristic of CT | MPN (%) (n=105) | BPN (%) (n=105) | P |
|---|---|---|---|
Number | Â | Â | <0.001* |
1 | 87(82.9) | 60(57.1) | Â |
>1 | 18(17.1) | 45(42.9) | Â |
Diameter(mm) | |||
 Mean±SD | 28.58±19.90 | 20.00±16.14 | 0.002* |
 Range | 5.3-130.9 | 2.0-76.5 |  |
 Edge sign |  |  | 0.072 |
 Yes | 26(24.8) | 38(36.2) |  |
 No | 79(75.2) | 67(63.8) |  |
 Empty sign |  |  | 0.023* |
 Yes | 8(7.6) | 19(18.1) |  |
 No | 97(92.4) | 86(81.9) |  |
 Spicule sign |  |  | 0.004* |
 Yes | 30(28.6) | 13(12.4) |  |
 No | 75(71.4) | 92(87.6) |  |
 Vascular notch sign |  |  | <0.001* |
 Yes | 80(76.2) | 48(45.7) |  |
 No | 25(23.8) | 57(54.3) |  |
 Lobulation sign |  |  | <0.001* |
 Yes | 55(52.4) | 13(12.4) |  |
 No | 50(47.6) | 92(87.6) |  |
 Spines |  |  | 0.009* |
 Yes | 18(17.6) | 6(5.7) |  |
 No | 87(82.9) | 99(94.3) |  |
 Pleural indentation |  |  | 0.004* |
 Yes | 35(33.3) | 17(16.2) |  |
 No | 70(66.7) | 88(83.8) |  |
 Mediastinal lymph node enlargement |  |  | 0.003* |
 Yes | 36(34.3) | 17(16.2) |  |
 No | 69(65.7) | 88(83.8) |  |
 Emphysema |  |  | 0.408 |
 Yes | 21(20.0) | 26(24.8) |  |
 No | 84(80.0) | 79(75.2) |  |
 Calcification |  |  | <0.001* |
 Yes | 3(2.9) | 25(23.8) |  |
 No | 102(97.1) | 80(76.2) |  |