| Metastatic spinal tumour | Unknown primary tumour | Known primary tumour | |
| Total no. of patients (40) | 5 (12.5%) | 35 (87.5%) | |
| Median age | 64 (58 - 72) years | 61 (45 - 70) years | |
| Gender | Male | 4/5 (80%) | 22/35 (62.8%) |
| Female | 1/5 (20%) | 13/35 (37.2%) | |