Scoring assessment of invasion of local mediastinal structures
| 1. Aortic invasion based on Picus' angle | |
| 0 | No contact/<45 |
| 1 | 45–90 |
| 2 | >90 |
| 2. Aortic invasion based on triangle effacement | |
| 0 | No effacement |
| 1 | Indeterminate |
| 2 | Effacement |
| 3. Pericardial invasion | |
| 0 | No contact |
| 1 | Absent fat plane, unless criterion 2 |
| 2 | Absent fat plane at tumour level, not above or below |
| 4. Major airway invasion | |
| 0 | No contact |
| 1 | Abutment only |
| 2 | Bulging or displacement |