Is Digital Breast Tomosynthesis the Better Mammogram for Local Breast Cancer Staging?
Menée auprès de 166 femmes atteintes d'un cancer du sein récemment diagnostiqué (âge moyen : 59,5 ans), cette étude évalue, du point de vue du taux de détection de lésions cancéreuses ipsilatérales ou controlatérales supplémentaires, l'intérêt d'ajouter une tomosynthèse numérique à une mammographie numérique
Digital breast tomosynthesis (DBT) is a better mammogram because it enables cross-sectional imaging, allowing for improved lesion conspicuity and characterization when compared with digital mammography. Published studies consistently show that combined screening with digital mammography and DBT has higher cancer detection rates and lower recall rates compared with digital mammography alone (1–4). Also, the higher sensitivity and higher specificity of DBT are maintained when synthetic two-dimensional digital mammography is used rather than conventional digital mammography (3). Outcome data on subsequent prevalence-round screening, interval cancer rates, and DBT performance across various breast densities and age groups are emerging and enable us to confirm that tomosynthesis is a robust screening tool. Conant et al (4) recently found that when tomosynthesis was compared with two-dimensional mammography alone, it resulted in high specificity across all age and breast density groups and an increase in the proportion of breast cancers that were smaller and less often node positive.
Radiology , éditorial, 2018