Editing Cancer registry (section)

=== Population-based cancer registry ===
Population-based cancer registries monitor the frequency of new cancer cases (so-called [[incident cases]]) every year in well defined populations and over time by collecting case reports from different sources (treatment facilities, clinicians and [[pathologist]]s, and death certificates). The frequency of these incident cases are expected per 100,000 of the mother population. If an unexpected accumulation can be observed, a hypothesis about possible causes is generated. This hypothesis is investigated in a second step by collecting more detailed data. The aim is to recognize and to reduce risks. Population-based registries can also monitor the effects of preventive measures. All population-based central registries in the United States and Canada are members of the [[North American Association of Central Cancer Registries]]. This organization acts as a voice for the registries when dealing with national standard-setting organizations, sets standards for digital cancer record transmission, and certifies the registries for the quality of their data, among other functions.