Breastcheck: research shows diagnostic errors are nothing new
The Agency of Healthcare Research and Quality (AHRQ), in February 2006, released a review entitled Effectiveness of Noninvasive Diagnostic Tests for Breast Abnormalities.
It indicated that common tests like mammography, ultrasound and MRI would miss between 4% and 9% of cancer cases among low-risk women testing negative, with potentially more missed cancers among women at higher risk.