Table 2.

Proportion of patients with positive LNs at each tumor size interval.

Patients with lymphadenectomy	SEER (n = 127)
Tumor size(mm)	1-9	10-19	20-29	30-39	40-49	50-59	60-69	70-79	80-160
No. of total patients	23	27	26	19	13	6	3	4	6
No. of patients with positive LNs(%)	0	3 (11.1%)	6 (23.1%)	2 (10.5%)	3 (23.1%)	1 (16.7%)	0	0	0
Mean no. of evaluated LNs (Range)	4.2 (1-26)	2.6 (1-7)	3.7 (1-8)	6.7 (1-80)	3.2 (1-12)	3.2 (1-6)	1 (1)	2 (1-5)	5.8 (1-17)