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Table 1 Sensitivity and specificity of CNB for ER and PgR Status.

From: Is preoperative core biopsy accurate in determining the hormone receptor status in women with invasive breast cancer?

Parameter ER status N = 95 PgR status N = 93
Positive CNB 89 85
Negative CNB 6 8
Positive SE 86 82
Negative SE 9 11
Sensitivity of CNB 97.6% 96.3%
Specificity of CNB 96.6% 96.4%
Concordance rate 92.6% 92.4%
  1. CNB: Core Needle Biopsy
  2. SE: Surgical Excision
  3. Positive: Quickscore 4 – 8
  4. Negative: Quickscore 0 – 3