Table 3.
Characteristics of lung lesions in patients with lung metastasis and primary lung cancer.
| Variable | Primary lung cancer | Lung metastasis | P value |
|---|---|---|---|
| Size of lung lesion, cm | 2.8 ± 1.2 | 2.1 ± 1.1 | 0.045 |
| Morphological score of lung lesion | 3.5 ± 0.8 | 2.7 ± 1.0 | 0.010 |
| SUVmax of lung lesion, median (range) | 12.1 (1.1–23.5) | 7.2 (0.6–19.4) | 0.207 |
| FDG uptake | 0.675 | ||
| Positive | 12 | 25 | |
| Negative | 3 | 4 | |
| Position | 0.481 | ||
| Peripheral | 13 | 27 | |
| Central | 2 | 2 | |
| Metastasis detected on PET/CT | |||
| Mediastinal lymph node metastasis | 0.004 | ||
| Yes | 6 | 1 | |
| No | 9 | 28 | |
| Skeletal metastasis | 0.319 | ||
| Yes | 3 | 2 | |
| No | 12 | 27 | |
| Local recurrence | 1.000 | ||
| Yes | 1 | 2 | |
| No | 14 | 27 | |
| Liver metastasis | 1.000 | ||
| Yes | 0 | 1 | |
| No | 15 | 28 | |
| CEA concentration, μg/L, median (range) | 2.4 (1.0–73.3) | 4.8 (1.7–69.7) | 0.005 |
SUV: standardized uptake value; FDG: 18Fluorine-2-fluoro-2-deoxy-d-glucose; PET/CT: positron emission tomography/computed tomography; CEA: carcinoembryonic antigen.