Diagnostic value of halo sign in young women (aged 45 to 49 years) in a breast screening programme with synthesized 2D mammography.

Objective:: To assess the clinical performance of the halo sign in tomosynthesis and synthesized 2D mammography, and to identify age groups where its diagnostic value may be greater.

Methods:: 183 patients with nodules were recalled from the breast screening programme (with tomosynthesis and 2D synthesized mammograms). The patients were separated into two groups, 45-49 years and 50-69 years, and depending on the presence or not of halo sign.