Salvage surgery for neck residue or recurrence of nasopharyngeal carcinoma after primary radiotherapy: options of surgical methods and regions

Table 1 Characteristics of NPC undergoing MRND and RND/ERND

Characteristic	Cases observed	Surgical procedure		χ ² value	P
		MRND (89)	RND/ERND (64)
Age (year)
≤50	90	55	35
>50	63	34	29	0.777	0.378
Gender
Male	128	74	54
Female	25	15	10	0.041	0.839
Status of LN
Recurrence	105	54	51
Residue	48	35	13	6.251	0.012
rN stage
N1	109	79	30
N2	17	8	9
N3	27	2	25	38.625	0.000
Size of LN
≤3 cm	80	68	12
3~6 cm	47	20	27
>6 cm	26	1	25	59.911	0.000
ECS
Yes	111	47	64
No	42	42	0	41.630	0.000

ISSN: 1477-7819