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Table 1 Clinicopathologic characteristics of the study subjects

From: The value of chest CT for prediction of breast tumor size: comparison with pathology measurement

Characteristics Tumors <20 mm on CT ( n= 139) Tumors ≥20 mm on CT ( n= 146 ) P values
Age (years)a 50.1±9 (31–78) 47.5 ± 10 (20–79) 0.249b
Stages    
IA 106 9  
IB 0 0  
IIA 28 74  
IIB 0 29  
IIIA 1 19 0.724c
IIIB 1 1
IIIC 3 14
T stages    
T1 138 13 0.267c
T2 0 124
T3 0 8
T4 1 1
N stages    
N0 107 81  
N1 28 33 0.467c
N2 1 18
N3 3 14
ER status    
Positive 95 81 0.164c
Negative 44 65
PR status    
Positive 70 62 0.020++
Negative 69 84
HER-2 amplification    
Positive 75 79 0.113c
Negative 64 67
Unknown   
Histopathologic type    
Invasive ductal carcinoma 119 126
Invasive lobular carcinoma 6 7
Othersd   
Histologic gradee    
Grade 1 26 8 0.091c
Grade 2 82 73
Grade 3 31 65
Unknown   
Operation type    
Mastectomy 17 33 0.051c
Breast conserving surgery 122 113
  1. a Mean values with standard deviations (numbers in parentheses are ranges).
  2. b Two-sample t- test.
  3. c Chi-squared test.
  4. d Others including invasive papillary carcinoma (n= 6), invasive micropapillary carcinoma (n= 5), mucinous carcinoma (n=4), metaplastic carcinoma (n=4), invasive tubular carcinoma (n= 3), invasive apocrine carcinoma (n= 3), neuroendocrine carcinoma (n=1), invasive carcinoma with squamous differentiation (n=1).
  5. e Scarff-Bloom-Richardson grade system.
  6. ER, estrogen receptor; PR, progesterone receptor.