Table 1.
Mediastinal lymph node metastasis in right-sided NSCLC
| Variables | RUL (n = 78) | RML (n = 35) | RLL (n = 100) | P value |
|---|---|---|---|---|
| Upper zone | 74/78 (94.9%) | 20/35 (57.1%) | 55/100 (55.0%) | < 0.001 |
| 2R | 34/78 (43.6%) | 13/35 (37.1%) | 14/100 (14.0%) | < 0.001 |
| 3 | 12/29 (41.4%) | 5/14 (35.7%) | 15/43 (34.9%) | 0.848 |
| 4R | 63/78 (80.8%) | 18/35 (51.4%) | 43/100 (43.0%) | < 0.001 |
| Subcarinal zone | ||||
| 7 | 17/78 (21.8%) | 29/35 (82.9%) | 86/100 (86.0%) | < 0.001 |
| Lower zone | 2/78 (2.6%) | 1/35 (2.9%) | 13/100 (13.0%) | 0.017 |
| 8 | 1/78 (1.3%) | 0/35 (0) | 9/100 (9.0%) | 0.019 |
| 9 | 2/78 (2.6%) | 1/35 (2.9%) | 5/100 (5.0%) | 0.666 |
| Negative LSLNS | 4/78 (5.1%) | / | 11/100 (11.0%) | 0.162 |
NSCLC non-small cell lung cancer; RUL right upper lobe; RML right middle lobe; RLL right lower lobe; LSLNS lobe specific lymph node stations
Values are the number of involved patients divided by the number of resected patients (%)