From: Correlation between the perineural invasion and neck metastasis in patients with laryngeal carcinoma: a cross sectional study
N staging
Total N
PNI
+ ve
-ve
P value
N
%
N0
28
3
10.71%
25
89.29%
< 0.0001*
N1
10
4
40.00%
6
60.00%
0.38
N2
75.00%
1
25.00%
0.18
N3
100.00%
0
0%
0.31