Fig. 4From: The origins of breast cancer associated with mammographic density: a testable biological hypothesisCumulative breast density: observed and predicted breast cancer incidence. Left: Breast density according to age. Values derived from mammogram in open circles; values from calibrated measures derived from magnetic resonance in closed circles. Right: Log breast cancer incidence in closed circles, log cumulative breast density in open circles. Incidence data for age-specific incidence of invasive breast cancer for Canada were obtained from Curado MP et al. Cancer incidence in five continents. Vol. IX. IARC Scientific Publication no. 160. Lyon, France: IARC Press; 2007Back to article page