Table 5. Actual rates of para-aortic lymph node metastasis according to the number of risk factors in squamous cell carcinoma patients.

Risk factors	Number	Positive PALN (%)
0	153	8 (5.2%)
1	228	21 (9.2%)
2	213	47 (22.1%)
3	45	16 (35.6%)
Total	639	92 (14.4%)

Abbreviations: PALN: para-aortic lymph node

Risk factors: 1. FIGO stage=IIA(vs. IB), 2. age>46y, 3. SCCA>6.5ng/ml.