Table 1 Clinicopathological characteristics of 70 patients with lung metastases from NSCLC
Factors | N | % |
|---|---|---|
Sex | ||
 Male | 47 | 67.1 |
 Female | 23 | 32.9 |
Median age | 64 (44–90) |  |
Primary T stage | ||
 T1 | 20 | 28.6 |
 T2 | 30 | 42.9 |
 T3 | 10 | 14.3 |
 T4 | 10 | 14.3 |
Primary N stage | ||
 N0 | 22 | 31.4 |
 N1 | 20 | 28.6 |
 N2 | 19 | 27.1 |
 N3 | 9 | 12.9 |
Primary stage | ||
 I | 15 | 21.4 |
 II | 19 | 27.1 |
 III | 36 | 51.4 |
Histology | ||
 SCC | 38 | 54.3 |
 AD | 32 | 45.7 |
Performance status | ||
 0 | 33 | 47.1 |
 1 | 36 | 51.4 |
 2 | 1 | 1.4 |
Smoking history | ||
 Smoker | 42 | 60.0 |
 Non-smoker | 28 | 40.0 |
Metastatic status | ||
 Isolated lung metastasis | 52 | 74.3 |
 Multiple metastases | 18 | 25.7 |
The diameter of targeted lung metastases | 3.5 (1.3–7.9) cm |  |