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Table 1 Patients' demographic and clinical characteristics

From: Improved false negative rate of axillary status using sentinel lymph node biopsy and ultrasound-suspicious lymph node sampling in patients with early breast cancer

Characteristics Value
Age  
Mean ± SD (years) 52.1 ± 10.3
Range 22-66
≤50 years 99 (45.8%)
>50 years 117 (54.2%)
Primary tumor histology  
Ductal 184 (85.2%)
Lobular 12 (5.6%)
Other 20 (9.3%)
Primary tumor grade  
I 22 (10.2%)
II 180 (83.3%)
III 14 (6.5%)
Hormonal receptor status 184 (85.2%)
Positive 143 (66.2%)
Negative 73 (33.8%)
HER2  
Positive 42 (19.4%)
Negative 174 (80.6%)
Ki67 14 (6.5%)
>14% 147 (68.1%)
≤14% 69 (31.9%)
AJCC stage  
I 76 (35.2%)
II 140 (64.8%)
  1. AJCC: American joint committee on cancer.