Histopathological features of the analyzed samples from pulmonary resections
| Variables | Pulmonary metastasis | Number of patients (%) |
|---|---|---|
| Number of metastases | Single | 12 (48) |
| Multiple | 13 (52) | |
| Histotype | Clear cell | 23 (92) |
| Sarcomatoid | 1 (4) | |
| Others | 1 (4) | |
| Laterality | Left lung | 7 (28) |
| Right lung | 14 (56) | |
| Bilateral involvement | 4 (16) | |
| Nodal involvement | Yes | 3 (12) |
| No | 3 (12) | |
| Unknown (not resected) | 21 (84) | |
| Necrosis | 0 | 17 (68) |
| 1 (+) | 3 (12) | |
| 2 (++) | 2 (8) | |
| 3 (+++) | 3 (12) |