Investigations performed in patients likely to receive some form of active treatment
| Investigations | Including | Confirmatory tests |
| Primary tumour | Adequate biopsy for histology confirmation | |
| CT scan of chest and upper abdomen | Spiral technique, with i.v. contrast, including at least level of both kidneys after drainage of pleural fluid | |
| Pulmonary function tests | Forced vital capacity, forced expiratory volume in 1 s | |
| Bone scan | Not routine, to be considered on clinical suspicion only | CT/MRI to confirm dubious findings |
| Brain CT/MRI | Not routine, to be considered on clinical suspicion only |
CT: computed tomography; MRI: magnetic resonance imaging;