Postoperative mortality (POM) in special subgroups
| Patients n | POM % | |
| Side of surgery | ||
| Right pneumonectomy | 293 | 10.6 |
| Left pneumonectomy | 355 | 3.9 |
| Pneumonectomy, side not specified | 9 | 22.2 |
| Type of surgery | ||
| Incomplete resection | 26 | 11.5 |
| Chest wall resection | 47 | 4.3 |
| Mediastinal lymph node dissection | 88 | 6.8 |