Table 2 Rate of benign histology of surgically-excised renal masses in the US and Korea
Size | Korea | United States | p | ||||
|---|---|---|---|---|---|---|---|
No. of renal masses | No. of benign masses | Rate of benign histology | No. of renal masses | No. of benign masses | Rate of benign histology | ||
≤ 2 cm | 2,405 | 243 | 10.1% | 515 | 124 | 24.1% | < 0.001 |
> 2 and ≤ 4 cm | 3,497 | 209 | 6.0% | 939 | 160 | 17.0% | < 0.001 |
> 4 and ≤ 7 cm | 1,780 | 60 | 3.4% | 735 | 74 | 10.1% | < 0.001 |
> 7 cm | 1,130 | 47 | 4.2% | 528 | 30 | 5.7% | 0.170 |
Total | 8,812 | 559 | 6.3% | 2,717 | 388 | 14.3% | < 0.001 |