Patient demographics
| Subjects | 100 |
| Males | 40 |
| Females | 60 |
| Age yrs | 57 (24–82) |
| Primary tumour | |
| Mamma | 29 |
| NSCLC | 17 |
| Oesophagus/stomach/colorectal | 9/2/4 |
| Renal cell | 6 |
| Ovarian | 6 |
| Carcinoma, unknown primary | 4 |
| Mesothelioma | 3 |
| Sarcoma | 3 |
| Other | 17 |
| Side of pleural effusion | |
| Left | 51 |
| Right | 49 |
Data are presented as n or median (range). NSCLC: nonsmall cell lung cancer.