Background Mammographic density (MD) is a solid marker of breast cancer risk, but it is unclear whether tumours arise specifically within dense tissue. 1cm-squares that subsequently contained the tumour and 41.0% (31.5%-53.9%) for the whole-breast. The odds of a tumour arising in a 1cm-square were, respectively, 6.1 (95%CI: 1.9, 20.1), 16.6 (5.2, 53.2) and 25.5-fold… Continue reading Background Mammographic density (MD) is a solid marker of breast cancer