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Table 2 Univariate analysis of factors related to level V lymph node metastasis (LNM) in 330 patients with papillary thyroid carcinoma (PTC)

From: Should level V be included in lateral neck dissection in treating papillary thyroid carcinoma?

Variable Cases LNM or Not P value
Age <45 yr 243 66 177 0.275
  ≥45 yr 87 29 58
Gender Male 140 47 93 0.099
  Female 190 48 142  
Locationa Left lobe 120 29 91 0.000
Right lobe 152 37 115  
  Whole thyroid 58 29 29  
Lesion Solitary lesion 248 67 181 0.216
  Multifocal lesion 82 28 54
Intact capsuleb Yes 292 81 211 0.244
  No 38 14 24
Gross Ex Yes 39 17 22 0.030
  No 291 78 213  
Tumor size (cm) ≤1 56 12 44 0.170
1 ≤2 140 44 96  
  2 ≤4 117 31 86  
  >4 17 8 9  
Simultaneous Yes 152 53 99 0.024
metastasesc No 178 42 136  
  1. aThe site of primary PTC.
  2. bIntact capsule means that tumor have not extended through its capsule.
  3. cSimultaneous metastases including level II, III and IV.
  4. Gross Ex, gross extrathyroidal extension.