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 | <0.001* | ||
| 1 | 87(82.9) | 60(57.1) | |
| >1 | 18(17.1) | 45(42.9) | |
| 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) | |