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Table 1 Clinical and pathologic characteristics of 571 patients

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

Characteristics SLNB(n=323) ALND(n=248) P(Chi-square test)
Mean age ±SD 51.06 ± 9.80 51.38 ± 9.54 0.540
Axillary recurrence    0.119
  No 317 238  
  Yes 6 10  
Recurrence    0.001
  No 302 209  
  Yes 20 39  
T stage    0.001
  pT1 232 127  
  pT2 79 104  
  pT3 12 15  
  pT4 0 2  
N stage    0.001
  pN0 256 147  
  pN1 52 85  
  pN2 8 6  
  pN3 7 10  
Stage    0.001
  Stage I 199 87  
  Stage IIA 78 94  
  Stage IIB 29 40  
  Stage IIIA 10 16  
  Stage IIIB 0 2  
  Stage IIIC 7 9  
Size of tumor, cm, mean ± SD 1.84 ± 1.55 2.56 ± 2.04 0.001
Histology    0.003
  G1 100 47  
  G2 147 73  
  G3 62 43  
Nuclear    0.015
  G1 50 32  
  G2 203 136  
  G3 63 74  
ER    0.495
  Negative 96 80  
  Positive 227 167  
PR    0.311
  Negative 119 102  
  Positive 203 146  
IHC    0.722
  Negative/1+ 175 131  
  2+ 78 66  
  3+ 69 48  
Lymphovascular invasion    0.001
  No 226 137  
  Yes 97 111  
  1. SLNB, sentinel lymph node biopsy; ALND; axillary lymph node dissection; ER,estrogen receptor; PR,progesterone receptor; IHC,immunohistochemistry.