Table 2 Comparison of the incidences of adjacent tissue staining in fresh larynx specimens after iSLN puncture

MOPT

1/10

3/10

6/10*

10/10****

P

0.2910

0.0286

 < 0.0001

anterior epiglottis space penetrated

2/10

4/10

7/10*

10/10***

P

0.3142

0.0349

0.0004

anterior epiglottis space stained

3/10

4/10

10/10**

10/10**

P

0.50

0.0015

0.0015

hyoid dyed

0/10

6/10**

7/10**

10/10****

P

0.0054

0.0015

 < 0.0001

thyroid cartilage dyed

4/10

6/10

9/10*

10/10**

P

0.3281

0.0286

0.0054