Table 1.
Characteristics of patients and pulmonary nodules
| Characteristic | Value |
|---|---|
| Total patients | 113 |
| Total nodules of localization | 113 |
| Gender | |
| Male | 63 |
| Female | 50 |
| Mean age (years) | 62.8±11.1 (20-83) |
| Previous extrathoracic malignancy (%) | 81 (71.7) |
| Smoking status (%) | |
| Current | 31 (27.4) |
| Former, quit | 20 (17.7) |
| Never smoked | 62 (54.9) |
| Pulmonary function | |
| FEV1 (percentage predicted) | 86.2±14.3 (46-124) |
| DLCO (percentage predicted) | 58.5±11.9 (35-87) |
| Nodule location (%) | |
| Right upper lobe | 30 (26.5) |
| Right middle lobe | 10 (8.9) |
| Right lower lobe | 25 (22.1) |
| Left upper lobe | 28 (24.8) |
| Left lower lobe | 20 (17.7) |
| Radiologic nodule features (%) | |
| Pure GGN | 35 (30.9) |
| Part-solid GGN | 50 (44.2) |
| Solid nodule | 28 (24.9) |
Values are presented as mean±SD (range) or n (%). FEV1=Forced expiratory volume in 1 s, DLCO=Diffusion capacity of the lung for carbon monoxide, GGN=Ground glass opacity nodule, SD=Standard deviation