Proficiency testing of diagnosis in histopathology and immunohistochemistry of breast pathology in China: Results from a pilot work of National Single Disease Quality Control Program for breast cancer

Pathologists are currently supposed to be aware of both domestic and international guidelines for breast cancer diagnosis, but it is unclear how successfully these guidelines have been integrated into routine clinical practice in China. Thus, this national proficiency testing (PT) scheme for breast pathology was set up to conduct a baseline assessment of the diagnostic capability of pathologists in China.