Table 2.
Baseline Demographic and Clinical Characteristics of LM− Patients
| Characteristics | Total(N=30) | % |
|---|---|---|
| Age(years), median range | 61 | (35–81) |
| <65 | 17 | 57 |
| ≥ 65 | 13 | 43 |
| Gender | ||
| Male | 14 | 47 |
| Female | 16 | 53 |
| Smoking status | ||
| Former/current | 11 | 37 |
| Never | 19 | 63 |
| Histology | ||
| Adenocarcinoma | 19 | 63 |
| Other | 11 | 37 |
| EGFR mutation | ||
| Yes | 6 | 20 |
| No | 7 | 23 |
| Unknown | 17 | 57 |
| Metastasis site | ||
| Leptomeningeal (yes/no) | 0 | 0 |
| Brain(yes/no) | 5 | 17 |
| Lung(yes/no) | 5 | 17 |
| Bone(yes/no) | 7 | 23 |
| Liver(yes/no) | 2 | 6 |
| Pericardium(yes/no) | 0 | 0 |
| Pleura(yes/no) | 6 | 20 |
Abbreviation: LM, leptomeningeal metastasis.