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Table 1 Demographic and clinical characteristics

From: The clinicopathologic characteristics and prognostic significance of triple-negativity in node-negative breast cancer

Variables No. of patients (n = 683) (%)
Sex  
   M 1 (0.1)
   F 682 (99.9)
Age (years)  
   Median (range) 47 (22–84)
   <35 51 (7.5)
   ≥35 632 (92.5)
Type of surgery  
   BCS 284 (41.6)
   Mastectomy 399 (58.4)
Histology  
   Invasive ductal carcinoma 605 (88.5)
   Invasive mucinous carcinoma 23 (3.4)
   Invasive papillary carcinoma 17 (2.5)
   Invasive lobular carcinoma 8 (1.2)
   Metaplastic carcinoma 7 (1.0)
   Medullary carcinoma 5 (0.7)
   Tubular carcinoma 5 (0.7)
   Invasive cribiriform carcinoma 5 (0.7)
   Invasive micropapillary carcinoma 3 (0.4)
   Mixed invasive lobular and ductal carcinoma 3 (0.4)
   Invasive apocrine carcinoma 2 (0.3)
Pathological tumor size  
   <2 cm 399 (58.5)
   ≥2 cm 284 (41.5)
Adjuvant chemotherapy  
   None 262 (38.4)
   Yes 418 (61.2)
   Unknown 3 (0.4)
  1. BCS, Breast conserving surgery