Table I.

The distribution and metastasis of mandibular gingival squamous cell carcinoma in cervical lymph nodes by routine pathological examination.

	Distribution in cervical lymph node
	Level I		Level II		Level III		Level IV		Level V
Stage/No.	P	N	P	N	P	N	P	N	P	N
T1/9	1	20	1	19	1	17	0	14	0	12
T2/16	5	46	2	48	1	50	0	38	0	18
T3/6	4	34	6	18	2	20	0	24	0	5
T4/11	12	43	7	28	5	32	0	35	0	17
In total	22	143	16	113	9	119	0	111	0	52
Metastatic rate (%)	13.33		12.4		7.03		0		0

N, negative; P, positive.