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| Size (mm) | Nodules, n (%) | Benign lesions, n (%) | Malignant lesions, n (%) | Mean size ± SD |
|---|---|---|---|---|
| ≤10 | 1,229 (53.2) | 625 (44.1) | 604 (67.8) | 6.2±1.8 |
| 10–19.9 | 621 (26.9) | 386 (27.2) | 235 (26.4) | 13.3±2.8 |
| 20–29.9 | 215 (9.3) | 179 (12.6) | 36 (4.0) | 24.4±2.9 |
| 30–39.9 | 177 (7.7) | 153 (10.8) | 14 (1.6) | 34.4±3.1 |
| ≥40 | 67 (2.9) | 75 (5.3) | 2 (0.2) | 46.9±6.4 |
| Total | 2,309 | 1,418 | 891 | 13.1±10.6 |
Data in parentheses are percentages. SD, standard deviation.
