Table 3.
—Lymph Nodes Examined for Right-Sided Cancers
| No. Lymph Nodes |
|||||
| Station | No. Patients (%) | Mean (SD) | Median | Range | Histologically Positive (%) |
| All lymph nodes | 317 (100) | 19.9 (11.1) | 18.0 | 1-72 | … |
| N2 stationsa | 317 (100) | 13.6 (8.4) | 11.0 | 1-49 | … |
| N1 stationsb | 311 (98) | 6.4 (5.0) | 5.0 | 1-37 | … |
| Right-sided cancers: N2 stations | |||||
| 2R | 276 (87) | 3.1 (2.7) | 2.0 | 1-17 | 1 (0.3) |
| 4R | 305 (96) | 5.1 (4.3) | 4.0 | 1-24 | 5 (1.6) |
| 7 | 310 (98) | 4.5 (3.6) | 3.0 | 1-24 | 4 (1.3) |
| 8 | 154 (49) | 1.4 (1.0) | 1.0 | 1-6 | 2 (0.6) |
| 9 | 204 (64) | 1.4 (0.8) | 1.0 | 1-6 | 1 (0.3) |
| Right-sided cancers: N1 stations | |||||
| 10R | 303 (95) | 2.3 (2.1) | 1.0 | 1-14 | 7 (2.2) |
| 11R | 246 (77) | 2.8 (3.0) | 2.0 | 1-28 | 17 (5.4) |
| 12R | 154 (48) | 3.5 (3.4) | 3.0 | 1-28 | 10 (3.2) |
| 13R | 32 (10) | 2.6 (2.0) | 2.0 | 1-8 | 1 (0.3) |
| 14R | 7 (2) | 2.1 (1.3) | 2.0 | 1-4 | 0 |
a
N2 stations: 2R, 4R, 7, 8, and 9.
b
N1 stations: 10R, 11R, 12R, 13R, and 14R.