Table 2.
The demographic and clinical variables of a testing set of patients with malignant SPNs and patients with benign SPNs
| 76 patients with malignant SPNs | 80 patients with benign SPNs | |
|---|---|---|
| Age, Median (SD) | 67.9 (7.6) | 65.4 (13.7) |
| Sex | ||
| Female | 34 (44.7%) | 30 (37.5%) |
| Male | 42 (55.3%) | 50 (62.5%) |
| Nodule size, Median (SD) | 2.5 (1.7) | 1.0 (1.4) |
| Pack-years, Median (SD) | 35.5 (23.7) | 35.0 (26.7) |
| Stages of NSCLC | ||
| stage I | 24 (31.6%) | |
| stage II | 30 (39.5%) | |
| stage III-IV | 22 (28.9%) | |
| Histological types of NSCLC | ||
| AC | 40 (52.6%) | |
| SCC | 36 (47.4%) | |
| Diagnosis of benign SPNs | ||
| Inflammatory lesion | 60 (75.0%) | |
| Sarcoid | 8 (10.0%) | |
| Granuloma | 7 (8.8%) | |
| Fibrosis | 5 (6.2%) |
Abbreviations: SPNs, solitary pulmonary nodules; SD, standard deviation; NSCLC, non-small-cell lung cancer; AC, adenocarcinoma; SCC, squamous cell carcinoma.