Figure 2 Observed/expected values plotted for oestrogen receptor (ER)+/Ki67+ cells in breast lesions associated with no or a low increased risk of subsequently developing breast cancer. Box plot graph in which the line across the box indicates the median, the box contains the values between the 25th and 75th centiles, and the whiskers extend to the highest and lowest values, excluding the outliers. The small open circle and the asterisk identify the outliers and extreme values, respectively. DE, duct ectasia; FA, fibroadenoma; Lact, lactating breast; Male, normal male and gynaecomastia; PAP, papilloma; PT, phyllodes tumour; RS, radial scar; SA, sclerosing adenosis.