From: Correlation analysis of risk factors for cervical lymphatic metastasis in papillary thyroid carcinoma
Tumor regions
Number of cases (person)
Is the lateral lymph node metastatic
χ2
P
Yes
No
Zone I
3
0 (0.0)
3 (100.0)
1.357
0.852
Zone II
22
13 (59.1)
9 (40.9)
Zone III
29
19 (65.5)
10 (34.5)
Zone IV
27
17 (63.0)
10 (37.0)
Zone V
10
3 (30.0)
7 (70.0)