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Table 1 Clinical and pathological characteristics of patients

From: Metaplastic breast cancer: a comparison between the most common histologies with poor immunohistochemistry factors

   MCBn(%) TN-ILCn(%) HG-IDCn(%) TN-IDCn(%) pvalue
  Number of cases 24 37 48 48  
Age Mean 49.58 53.49 49.25 49.52 0.478
CS I 0 0 0 0 0.364
  IIA 3 (12.5) 4 (10.8) 6 (12.5) 6 (12.5)  
  IIB 6 (25.0) 1 (2.7) 12 (25.0) 12 (25.0)  
  IIIA 6 (25.0) 13 (35.1) 12 (25.0) 12 (25.0)  
  IIIB 6 (25.0) 7 (18.9) 12 (25.0) 12 (25.0)  
  IIIC 1 (4.2) 6 (16.2) 2 (4.2) 2 (4.2)  
  IV 2 (8.3) 6 (16.2) 4 (8.3 4 (8.3)  
T T1 0 0 0 0 0.114
  T2 0 3 (8.1) 1 (2.1) 1 (2.1)  
  T3 9 (37.5) 11 (29.7) 17 (35.4) 19 (39.6)  
  T4 15 (62.5) 23 (62.2) 30 (62.5) 28 (58.3)  
N N0 7 (29.2) 5 (13.5) 9 (18.8) 8 (16.7) 0.748
  N1 8 (33.3) 10 (27.0) 19 (39.6) 18 (37.5)  
  N2 7 (29.2) 16 (43.2) 17 (35.4) 19 (39.6)  
  N3 2 (8.3) 6 (16.2) 3 (6.3) 3 (6.3)  
M M0 22 (91.7) 28 (75.7) 44 (91.7) 44 (91.7) 0.323
  M1 2 (8.3) 9 (24.3) 4 (8.3) 4 (8.3)  
HR Estrogen 2 (8.3) --- 29 (60.4) --- <0.001
  Progesterone 3 (12.5) --- 26 (54.2) --- <0.001
HER2/neu Positive 1 (4.2) --- 14 (29.2) --- <0.001
  1. MCB: metaplastic carcinoma of the breast; TN-ILC: triple-negative invasive lobular carcinoma; HG-IDC: high-grade invasive ductal carcinoma; TN-IDC: triple-negative invasive ductal carcinoma; CS: clinical stage; T: tumor size; N: lymph nodes; M: distant metastasis; HR: hormone receptors; HER2/neu: human epidermal growth factor receptor 2; BC: breast cancer.