Procedures Used to Sample Lymph Nodes, by Lymph Node Level
| Lymph node level | Mediastinoscopy | Thoracotomy | Chamberlain/VATS | Esophageal sonography |
|---|---|---|---|---|
| 2L, 2R | ✓ | ✓ | ||
| 4L, 4R | ✓ | ✓ | ✓ | |
| 5, 6 | ✓ | ✓ | ✓ | |
| 7 | ✓ | ✓ | ✓ | |
| 8, 9 | ✓ | ✓ | ||
| 10L, 10R | ✓ | ✓ | ||
| 11–14 | ✓ |
Reprinted with permission of Society of Thoracic Surgeons (49).