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Table 1 Clinicopathologic features for the 100 paired breast cancer cases (core biopsy and surgical specimen)

From: Comparison of breast cancer surrogate subtyping using a closed-system RT-qPCR breast cancer assay and immunohistochemistry on 100 core needle biopsies with matching surgical specimens

  Core biopsy Surgical specimen
n = 100 n = 100
Age at diagnosis Median (range) 61 years (35–93)    
Tumor histological subtype IDC 76 76
ILC 12 12
Other 12 12
Tumor histological grade (Nottingham) 1 10 8
2 71 61
3 19 31
Tumor size (mm) Median (range)    ¨ 34.9 (8–159)
Axillary lymph node status Positive ¨ 47
Negative ¨ 51
N/Aa ¨ 2
ER status ≥1% pos Positive 87 87
Negative 13 13
PR status ≥1% pos Positive 78 81
Negative 22 19
Ki-67 Median % staining (range)    15 (4–90) 17.5 (4–95)
HER2 status (HercepTest; SISH in case of score 2+ and 3+) Positive 18 18
Negative 82 82
  1. a axillary dissection was not performed