Rates of metastatic spread according to histological subtype
| Mesothelioma type, n (%) | Any lymph node metastases, n (%) | Extrathoracic metastases, n (%) | Any metastases, n (%) |
| Unknown 50 (33.6%) | 17 (34) | 21 (42) | 42 (84) |
| Epithelioid 43 (28.9%) | 23 (53.5) | 25 (58.1) | 38 (88.4) |
| Sarcomatoid 31 (20.8%) | 7 (22.6) | 15 (48.4) | 25 (80.6) |
| Biphasic 24 (16.1%) | 10 (41.7) | 11 (45.8) | 21 (87.5) |
| Anaplastic 1 (0.7%) | 0 (0) | 1 (100) | 1 (100) |
| Total 149 | 57 (38.3) | 73 (49) | 127 (85.2) |
| p Value (excluding “unknown” and “anaplastic”) | 0.028 | NS | NS |