Fig. 1
Atypical ductal hyperplasia. (a) Scanning view showing unfolded TDLU with atypical ductal hyperplasia (center) with two foci of columnar cell change (arrows) and lobular hyperplasia (asterisks); (b–d) higher magnification of the lesions in a. (b) ADH with monotonous atypical cells with atypical architecture characterized by cribriform growth. (c) Columnar cell change with psammomatous type microcalcification. (d) Atypical lobular hyperplasia