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Table 6 Patients with sentinel lymph node biopsy (n = 360)

From: Accuracy of axillary ultrasound in preoperative nodal staging of breast cancer - size of metastases as limiting factor

  Patients pN + (sn) % p-value
Age (years)     
≤50 58 13 22.4 n.s.
>50 302 63 20.9  
BMI     
<25 146 31 21.2 n.s.
25-29.9 125 26 20.8  
≥30 89 19 21.3  
Tumour stage     
pT1a/b 64 7 10.9 0.009
pT1c 182 32 17.6  
pT2 111 37 33.3  
Histological subtype     
Ductal 259 57 22 n.s.
Lobular 31 8 25.8  
Others 70 11 15.7  
Grading     
G1 63 5 7.9 0.014
G2 211 48 22.7  
G3 86 23 26.7  
Lymphangiosis     
No 250 21 8.4 <0.001
Yes 110 55 50  
Growth pattern     
Unifocal 335 65 19.4 0.021
Multicentric 22 9 40.9  
ER status     
Positive 301 64 21.3 n.s.
Negative 59 12 20.3  
PR status     
Positive 270 57 21.1 n.s.
Negative 90 19 21.1  
HER2 status     
Negative 336 73 21.7 n.s
Positive 24 3 12.5  
Ki-67     
≤14% 142 24 16.9 0.067
>14% 194 47 24.2  
Total 360 76 21.1