Table 1.

Data of the 18 patients who underwent 20 neck dissections

Patient number	Gender	Age (years)	Tumor localization	T stage	Neck dissection levels	Frozen section: Number of metastatic lymph nodes/number of dissected SLN	Final histopathological examination: Metastatic lymph nodes/ number of dissected lymph nodes for each specimen
1	M	33	Lower lip	2	I–III	0/3	0/12
2	M	64	Lower lip	2	I–III	0/5	0/2
3	F	76	Tongue	1	I–IV	0/3	0/26
4	F	28	Tongue	1	I–IV	0/3	0/14
5	F	76	Floor of the mouth	2	I–III	0/5	0/19
6	F	46	Floor of the mouth	2	I–III	0/3	0/5
7	F	46	Floor of the mouth	2	I–III	0/3	0/4
8	M	59	Tongue	2	I–V	3/5	2/23
9	F	50	Tongue	2	I–V	1/4	0/13
10	F	63	Lower lip	2	I–III	0/4	0/20
11	M	68	Lower lip	2	I–III	0/3	0/15
12	M	47	Lower lip	2	I–III	0/2	0/9
13	M	55	Lower lip	2	I–III	0/2	0/12
14	M	70	Lower lip	2	I–III	0/3	0/16
15	M	70	Lower lip	2	I–III	0/1	0/16
16	M	59	Tongue	2	I–III	2/3	0/18
17	F	59	Tongue	2	I–III	1/2	0/15
18	M	47	Tongue	2	I–V	2/4	0/17
19	M	53	Floor of the mouth	2	I–III	0/4	0/22
20	M	54	Floor of the mouth	2	I–III	0/4	0/17

M: male; F: female; T: tumor; SLN; selective neck dissection