| Benign | Malignant | p-value |
---|---|---|---|
(n =16) | (n =314) | ||
Baseline characteristics | Â | Â | Â |
Age (years)a | 58.1 ± 7.3 | 62.1 ± 10.4 | 0.127 |
Male sex, no. (%) | 9 (56.3) | 147 (46.8) | 0.461 |
Smoking, no. (%) | Â | Â | 0.555 |
  Never-smoker | 8 (50.0) | 196 (62.4) |  |
  Ex-smoker | 6 (37.5) | 95 (30.3) |  |
  Current-smoker | 2 (12.5) | 23 (7.3) |  |
Smoking (PY) | 12.2 ± 17.3 | 10.0 ± 16.5 | 0.605 |
Radiologic characteristics | Â | Â | Â |
Size (mm)a | 15.1 ± 9.3 | 20.3 ± 11.0 | 0.063 |
GGO pattern, no. (%) | Â | Â | 1.0 |
  Pure | 3 (18.8) | 72 (22.9) |  |
  Part-solid | 13 (81.3) | 242 (77.1) |  |
TDR (%)a | 86.6 ± 17.5 | 83.3 ± 20.7 | 0.536 |
Air bronchogram, no. (%) | 7 (43.8) | 175 (55.7) | 0.347 |
Bubble lucency, no. (%) | 2 (12.5) | 46 (14.6) | 1.0 |
Pleural or fissure retraction, no. (%) | 4 (25.0) | 143 (45.5) | 0.107 |
Irregular margin, no. (%) | 6 (37.5) | 148 (47.1) | 0.451 |
Maximal SUV on FDG-PET/CTa,b | 0.39 ± 0.67 | 1.19 ± 1.28 | 0.101 |
Progression, no. (%)c | Â | Â | 1.0 |
  Progression | 4/12 (33.3)d | 88/232 (37.9) |  |
  Without progression | 8/12 (66.7) | 144/232 (62.1)e |  |