Baseline characteristics of the patients
| Characteristics | No. | Percentage |
|---|---|---|
| Mean age (range) (yr) | 62 (36–78) | |
| Sex | ||
| Male | 50 | 54.9% |
| Female | 41 | 45.1% |
| Primary malignancy | ||
| Lung | 36 | 39.6% |
| Breast | 13 | 14.3% |
| Liver | 5 | 5.5% |
| Bile duct | 2 | 2.2% |
| Esophagus | 11 | 12.1% |
| Cardia and stomach | 4 | 4.4% |
| Colorectum | 5 | 5.5% |
| Sarcoma | 2 | 2.2% |
| Multiple myeloma | 1 | 1.1% |
| Kidney | 2 | 2.2% |
| Ureter | 3 | 3.3% |
| Prostate | 1 | 1.1% |
| Uterus and ovary | 2 | 2.2% |
| Unknown primary | 4 | 4.4% |