Number (%) of non-calcified nodules (NCNs), focal ground glass opacities (GGOs), and mediastinal masses found on the initial LDCCT screen
| No with NCNs | 93 (20.7) |
| Total number of NCNs | 155 |
| NCN ⩾10 mm | 6 (1.3) |
| NSCLC stage 1 | 1 (0.2) |
| NCN 5–9 mm | 68 |
| NCN ⩽5 mm | 80 |
| Focal GGO | 13 (2.9) |
| Mediastinal mass | 3 (0.7) |
| Small cell lung cancer | 1 (0.2) |
| Benign cyst | 2 (0.5) |