PART TWO: Quebec’s Debate about Breast Cancer Test Errors Turns to Questions about Defining Accuracy of Pathology Laboratory Testing
Specialist physicians in Quebec question why the outside review of ER and HER2 breast cancer pathology test results used a 1% standard versus a 10% standard
Public debate in Quebec about inaccurate tests for breast cancer by the province’s pathology laboratories has turned attention to an area of pathology testing which is seldom discussed in public forums. It is the situation where there is often significant variability in rate of false positives and false negatives reported by different pathology laboratories performing the same tests for breast cancer and other diseases.
Quebec’s media coverage about problems with its pathology laboratories and inaccurate breast cancer tests was reported last week by Dark Daily in the e-briefing titled “PART ONE: More Debate in Quebec about How Pathology Labs Performed Inaccurate Breast Cancer Tests” . Here in Part Two, we describe how Quebec’s medical specialists are calling attention to another source of problems. This is how the use of various standards for evaluating breast cancer specimens can contribute to different rates of false positive and false negative results on pathology tests reported by pathology laboratories in the province.