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

Table 5 Analysis of extracapsular extension of metastasis cervical node in each site of SCC

	Extracapsular extension
	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
	(79)			(56)			(45)			(45)			(34)			(30)
	+	−		+	−		+	−		+	−		+	−		+	−
Clinical staging			0.465			0.518			0.195			0.255			0.891			0.634
Stage I	0	0		5	5		0	0		0	0		0	0		0	0
Stage II	6	4		11	6		9	8		8	6		3	2		2	2
Stage III	25	11		9	5		12	3		12	3		10	4		9	5
Stage IV	26	7		12	3		10	3		13	3		10	5		9	3
Tumor size			0.121			0.318			0.433			0.865			0.898			1.000
≤ 1.0 cm	0	0		3	4		0	0		0	0		0	0		0	0
1.1–2.0 cm	3	4		3	4		0	0		0	0		0	0		0	0
2.1–3.0 cm	11	7		11	3		13	8		11	5		7	4		0	0
3.1–4.0 cm	19	5		13	5		8	4		15	5		8	4		11	6
> 4.0 cm	24	6		7	3		10	2		7	2		8	3		9	4
Pathologic differentiation			0.874			0.447			0.718			0.474			0.654			0.705
Well differentiated	21	7		10	9		7	5		10	6		7	3		8	5
Moderately differentiated	25	9		12	5		8	2		15	4		7	2		0	0
Poorly differentiated	6	3		11	3		10	5		8	2		9	6		12	5
Undifferentiated	5	3		4	2		6	2		0	0		0	0		0	0
Size of neck node			0.506			0.793			0.849			0.968			0.824			0.994
1–3 mm	5	4		4	3		3	1		3	1		2	1		2	1
4–6 mm	9	5		7	4		4	3		6	3		4	3		3	1
7–9 mm	11	4		9	3		6	2		9	3		6	4		5	2
10–30 mm	31	9		17	9		18	8		15	5		9	3		10	6
> 30 mm	1	0		0	0		0	0		0	0		2	0		0	0

^aChi-square test or Fisher’ s exact test.
+ extracapsular extension of metastasis cervical node, − no extracapsular extension of metastasis cervical node.

ISSN: 1477-7819