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Table 1 The basic characteristics and ultrasound features for the lymph node in PTMCs

From: Diagnostic accuracy of ultrasonographic features for lymph node metastasis in papillary thyroid microcarcinoma: a single-center retrospective study

Features Negative LNM (n = 456) Positive LNM (n = 256) P
Boundary    0.326
 Well defined 293 155  
 Poorly defined 163 101  
Echo    0.168
 Uniform 310 161  
 Nonuniform 146 95  
Shape    <0.001
 L/S ratio more than 2 346 150  
 Round shape 110 106  
Echogenic fatty hilum    <0.001
 Nonloss 450 180  
 Loss 6 76  
Cystic change    <0.001
 Absent 418 182  
 Present 38 74  
Calcification    <0.001
 Absent 430 168  
 Present 26 88  
Abnormal vascularity    0.002
 Absent 354 172  
 Present 102 84