Fig. 1From: Breast Tissue Organisation and its Association with Breast Cancer RiskExamples of mammograms exhibiting different distributions of fatty and dense tissue. a The dense tissue is mainly located on the lower part of the breast. b The bulk of the dense tissue is concentrated in the retroareolar area. c The dense tissue is scattered but falls into two clusters, one next to the nipple and the other in the upper part of the breastBack to article page