Characteristics of Target Nodule
| Reference standard result | ||||||
|---|---|---|---|---|---|---|
| Total | Benign | Malignant | ||||
| Characteristic | n | % | n | % | n | % |
| All nodules | 344 | 100 | 160 | 47 | 184 | 53 |
| Benign histology | 160 | 47 | ||||
| Hamartoma | 3 | 7 | ||||
| Histoplasmosis | 1 | 2 | ||||
| Granuloma | 13 | 29 | ||||
| Tuberculosis | 2 | 4 | ||||
| Other | 26 | 58 | ||||
| Malignant histology | ||||||
| NSCLC | 41 | 22 | ||||
| Adenocarcinoma | 64 | 35 | ||||
| Squamous cell | 56 | 30 | ||||
| Small cell/metastasis | 11 | 6 | ||||
| Bronchoalveolar | 3 | 2 | ||||
| Unable to assign | 9 | 5 | ||||
| Nodule size (mm) | ||||||
| ≤10 | 71 | 21 | 54 | 17 | 24 | |
| >10–≤15 | 96 | 28 | 55 | 41 | 43 | |
| >15–≤20 | 85 | 25 | 25 | 60 | 70 | |
| >20 | 83 | 25 | 19 | 64 | 77 | |
| No size reported | 9 | 1 | 7 | 2 | 22 | |
| Total | 344 | 160 | 187 | 54 | ||
| CT nodule location | ||||||
| Upper left | 76 | 22 | 28 | 48 | 26 | |
| Upper right | 98 | 28 | 41 | 57 | 30 | |
| Middle left | 23 | 7 | 11 | 12 | 6 | |
| Middle right | 43 | 13 | 23 | 20 | 11 | |
| Lower left | 47 | 14 | 23 | 24 | 13 | |
| Lower right | 57 | 16 | 31 | 26 | 14 | |