A sweeping medical study found 109 cases of breast cancer that had not been previously diagnosed in Quebec.
About 22,000 mammograms had to be redone in the province.
The provincial College of Physicians conducted the broad search after it was informed in late 2010 that there might be errors in previous mammograms.
The results announced today indicate those fears of misdiagnosis were well-founded.
The College of Physicians is making a series of recommendations to avoid a repeat scenario.
The radiologist associated with the original tests has not been practising for nearly two years.
It’s not the first such case in Canada.
In Newfoundland, there was a judicial inquiry after a litany of problems resulted in 386 wrong diagnoses. The inquiry made dozens of recommendations.