Table 2.
Risk of LNM in ccRCC patients with different tumor sizes, stratified by T stage.
| Tumor size (cm) | T1 | T2 | T3 | T4 | ||||
|---|---|---|---|---|---|---|---|---|
| n | LNM rate | n | LNM rate | n | LNM rate | n | LNM rate | |
| ≤4 | 970 | 17 (1.75%) | 53 | 0 (0.00%) | 174 | 18 (10.34%) | 15 | 6 (40.00%) |
| 4–7 | 1,289 | 62 (4.81%) | 98 | 4 (4.08%) | 831 | 132 (15.88%) | 60 | 19 (31.67%) |
| 7–10 | 159 | 10 (6.29%) | 819 | 72 (8.79%) | 1,358 | 267 (19.66%) | 146 | 63 (43.15%) |
| >10 | 80 | 6 (7.50%) | 517 | 63 (12.19%) | 1,498 | 363 (24.23%) | 225 | 68 (30.22%) |
| P value | <0.001 | <0.001 | <0.001 | 0.220 | ||||
LNM = lymph node metastases; ccRCC = clear cell renal cell carcinoma.