Atypia detected during breast screening and subsequent development of cancer: observational analysis of the Sloane atypia prospective cohort in England
Objective To explore how the number and type of breast cancers developed after screen detected atypia compare with the anticipated 11.3 cancers detected per 1000 women screened within one three year screening round in the United Kingdom. Design Observational analysis of the Sloane atypia prospective cohort in England. Setting Atypia diagnoses through the English NHS breast screening programme reported to the Sloane cohort study. This cohort is linked to the English Cancer Registry and the Mortality and Birth Information System for information on subsequent breast cancer and mortality. Particip...