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Table 3 Clinical and pathologic characteristics of patients clinically suspected of lymph node metastasis for subgroups based on type of axillary operation

From: Feasibility of sentinel lymph node biopsy in breast cancer patients clinically suspected of axillary lymph node metastasis on preoperative imaging

Characteristics SLNB (n=176) ALND (n= 180) P(Chi-square test)
Mean age ± SD 52.00 ± 9.61 47.00 ± 9.45 0.743
Axillary recurrence    0.420
  No 171 172  
  Yes 5 8  
Recurrence    0.049
  No 159 151  
  Yes 16 29  
T stage    0.001
  pT1 120 86  
  pT2 45 78  
  pT3 11 14  
  pT4 0 2  
N stage    0.001
  pN0 127 91  
  pN1 35 74  
  pN2 7 6  
  pN3 7 9  
Stage    0.001
  Stage I 98 54  
  Stage IIA 41 63  
  Stage IIB 21 38  
  Stage IIIA 9 15  
  Stage IIIB 0 2  
  Stage IIIC 7 8  
Size of tumor, cm, mean ± SD 2.06 ± 1.91 2.62 ± 1.70 0.019
Histology    0.013
  G1 47 27  
  G2 73 96  
  G3 43 48  
Nuclear    0.104
  G1 22 20  
  G2 103 90  
  G3 45 65  
ER    0.833
  Negative 63 66  
  Positive 113 113  
PR    0.311
  Negative 71 79  
  Positive 105 101  
IHC    0.525
  Negative/1+ 92 89  
  2+ 38 47  
  3+ 46 41  
Lymphovascular invasion    0.002
  No 113 63  
  Yes 86 94  
  1. ER,estrogen receptor; PR,progesterone receptor; IHC,immunohistochemistry.