Regional Failures after Selective Neck Dissection in Previously Untreated Squamous Cell Carcinoma of Oral Cavity

Table 1

Patient characteristics and treatment modalities in clinically node negative and positive patients.

	Node negative patients		Node positive patients
	Number (𝑁)	Percent (%)	Number (𝑁)	Percent (%)
Gender					Not significant
Male	104	66	38	62
Female	54	34	23	38
Subsite					0.009
Anterior tongue	119	75	40	66
Upper alveolus	1	1	0	0
Lower alveolus	22	14	10	16
Buccal mucosa	16	10	6	10
Retromolar trigone	0	0	2	3
Lips	0	0	3	5
Grade					Not significant
Well	79	50	31	51
Moderate	64	40	21	34
Poor	13	10	9	15
Treatment modality					0.0001
S	25	16	1	2
S + RT	91	58	30	49
S + CRT	16	10	11	18
C + S + RT	15	10	6	10
C + S + CRT	11	7	13	21
Level					0.002
I–III	33	21	2	3
I–IV	125	79	59	97

S: surgery, RT: radiation therapy, and C: chemotherapy.