Prognostic factors of cervical node status in head and neck squamous cell carcinoma

Table 4 Size of neck node and metastasis

Size of neck node	Oral tongue		p value ^a	Base of the tongue		p value ^a	Lip		p value ^a	Floor of the mouth		p value ^a	Buccal mucosa		p value ^a	Retromolar trigone		p value ^a
	(410)			(319)			(238)			(231)			(159)			(115)
	+	−		+	−		+	−		+	−		+	−		+	−
Therapeutic neck dissection			<0.001			0.072			0.012			0.002			0.231			0.682
1–3 mm	7	78		5	35		3	27		2	40		2	18		2	12
4–6 mm	10	61		7	42		5	29		6	25		5	14		3	7
7–9 mm	11	31		7	39		6	38		9	28		7	21		5	10
10–30 mm	31	53		16	36		18	33		13	19		9	21		12	33
> 30 mm	1	1		0	0		0	0		0	0		2	1		0	0
Prophylactic neck dissection			0.006			0.013			0.150			0.007			0.628			0.898
1–3 mm	2	34		2	26		1	12		2	28		1	11		1	4
4–6 mm	4	28		4	32		2	14		3	21		2	14		1	4
7–9 mm	4	30		5	35		2	21		3	17		3	17		2	7
10–30 mm	9	15		10	18		8	19		7	8		3	8		4	8
> 30 mm	0	0		0	0		0	0		0	0		0	0		0	0

^aChi-square test or Fisher’ s exact test.
+ metastasis of SCC to cervical lymph node, − no metastasis of SCC to cervical lymph node.

ISSN: 1477-7819