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Table 1 Patient clinicopathological characteristics

From: Clinical relevance of ErbB-2/HER2 nuclear expression in breast cancer

Characteristic N° patients %
Total number of patients 273  
Age (years)   
   Mean 55.5  
   SD 13.7  
Menopausal status   
   Premenopausal 111 41
   Postmenopausal 162 56
Tumor size   
   T1 58 21
   T2 148 54
   T3 45 17
   T4 22 8
Lymph node status   
   N0 118 43
   N1 83 30
   N2 72 27
Distant metastasis   
   M0 256 94
   M1 17 6
Metastatic sites location   
   Bone 7  
   Liver 3  
   Skin 2  
   Brain 2  
   Not documented 3  
Clinical stage   
   I 39 14
   II 137 50
   III 81 30
   IV 16 6
Tumor grade   
   1 45 17
   2 134 50
   3 86 33
   Not documented 8  
Hormone receptor status, crossed results   
   ER+PR+a 140 52
   ER+PR- 50 18
   ER-PR+ 4 2
   ER-PR- 75 28
   Not documented 4  
  1. aER: estrogen receptor; PR: progesterone receptor