Table 5.
Overall lymph node metastasis rate of the five included studies (n/N(%))
| LN station | T1 | T2 | T3 | T4 |
|---|---|---|---|---|
| 1 | 17/2445 (0.7%) | 31/485 (6.4%) | 88/352 (25.0%) | 375/1573 (23.8%) |
| 2 | 3/1822 (0.2%) | 11/355 (3.1%) | 54/187 (28.9%) | 269/1494 (18.0%) |
| 3 | 135/2452 (5.5%) | 106/485 (21.9%) | 148/353 (41.9%) | 1118/1574 (71,0%) |
| 4 | 79/2452 (3.2%) | 69/485 (14.2%) | 70/353 (19.8%) | 686/1574 (43.6%) |
| 5 | 13/2429 (0.5%) | 19/478 (4.0%) | 37/349 (10.6%) | 155/1569 (9.9%) |
| 6 | 72/2452 (2.9%) | 89/485 (18.4%) | 78/353 (22.1%) | 540/1573 (34.3%) |
| 7 | 32/2451 (1.3%) | 47/483 (9.7%) | 76/353 (21.5%) | 565/1574 (35.9%) |
| 8 | 19/2439 (0.8%) | 38/483 (7.9%) | 49/349 (14.0%) | 443/1573 (28.2%) |
| 9 | 11/2403 (0.5%) | 17/480 (3.5%) | 16/342 (4.7%) | 296/1567 (18.9%) |
| 10 | 0/680 | 3/357 (0.8%) | 17/188 (9.0%) | 134/1489 (9.0%) |
| 11 | 5/1237 (0.4%) | 12/474 (2.5%) | 17/335 (5.1%) | 223/1567 (14.2%) |
| 12 | 3/440 (0.7%) | 15/463 (3.2%) | 14/326 (4.3%) | 134/1557 (8.6%) |
| 13 | 0/354 | 1/177 (0.6%) | 40/1481 (2.7%) | |
| 14 | 2/1408 (0.1%) | 3/455 (0.7%) | 7/310 (2.3%) | 67/1557 (4.3%) |
| 15 | 0/354 | 0/177 | 11/1481 (0.7%) | |
| 16 | 0/354 | 4/177 (2.3%) | 126/1481 (8.5%) | |
| 19 | 0/26 | 1/177 (0.6%) | 1/110 (0.9%) | |
| 20 | 0/26 | 0/177 | 1/110 (0.9%) |