The aim of this study is to assess attendance among women invited to additional breast imaging because they were identified as having an increased risk of breast cancer at screening. High-risk women were defined in two studies: Study A; women with high mammographic density, representing approximately 3-5% of screened women, and Study B; women with a false-positive screening result. Women in Study A will be offered an additional screening examination with digital breast tomosynthesis immediately within 6 months after the screening examination. Women in Study B will be offered an additional standard digital mammography examination one year after their initial screening.

Inclusion Criteria:

• invited to screening
• extremely dense breast (Study A) or a false positive screening result (Study B)

Exclusion Criteria:

• Opted out or not signed written consent related to the study
• Women who have opted out from giving us permission to use screening data for quality assurance and research

Only women are invited to mammographic screening

Study A will take place at the University Hospital of Akershus, while Study B will take place in Drammen, Vestre Viken Hospital and Oslo University Hospital

Data will not be shared outside the project group