Fig. 3From: Evaluation of the association between quantitative mammographic density and breast cancer occurred in different quadrantsA woman with an invasive ductal carcinoma (arrows) in the LI quadrant of the left breast. Upper panel: original mammography. Lower panel: segmented breast area and density. Each view is divided into 2 partitions using a bisecting line through the nipple. In the right normal breast, the percent density is the highest in the UO quadrant (25.8%), followed by LO quadrant (22.2%), UI quadrant (18.7%), and LI quadrant (15.1%)Back to article page