Table 3. Incidence of lymph node metastasis according to each subclassified site.
| LN site | All the cases included in this study (N1=531) | Cases of stage Ia–IIa disease (N2=350) | ||||||
|---|---|---|---|---|---|---|---|---|
| No. of patients with metastatic LNs (n1) | No. of patients who had the relevant LNs removed (N1') | Metastatic rate 1* (%) | Metastatic rate 2† (%) | No. of stage Ia–IIa patients with metastatic LNs (n2) | No. of stage Ia–IIa patients who had the relevant LNs removed (N2') | Metastatic rate 3‡ (%) | Metastatic rate 4§ (%) | |
| CIN | 37 | 471 | 7.0 | 7.9 | 11 | 304 | 3.1 | 3.6 |
| IIN | 69 | 519 | 13.0 | 13.3 | 25 | 341 | 7.1 | 7.3 |
| EIN | 40 | 481 | 7.5 | 8.3 | 11 | 308 | 3.1 | 3.6 |
| ON | 81 | 516 | 15.3 | 15.7 | 29 | 341 | 8.3 | 8.5 |
| CINDEIN | 10 | 297 | 1.9 | 3.4 | 2 | 171 | 0.6 | 1.2 |
| CINDON | 6 | 396 | 1.1 | 1.5 | 2 | 246 | 0.6 | 0.8 |
| SN | 22 | 452 | 4.1 | 4.9 | 8 | 286 | 2.3 | 2.8 |
| CLN | 33 | 478 | 6.2 | 6.9 | 9 | 312 | 2.6 | 2.9 |
| PN | 21 | 518 | 4.0 | 4.1 | 8 | 340 | 2.3 | 2.4 |
CIN, common iliac node; CINDEIN, circumflex iliac nodes distal to the external iliac node; CINDON, circumflex iliac nodes to distal obturator node; CLN, cardinal ligament node; EIN, external iliac node; IIN, internal iliac node; LN, lymph node; ON, obturator node; PN, parametrial node; SN, sacral node.
*n1/N1 (N1=531). †n1/N1'. ‡n2/N2 (N2=350). §n2/N2'.