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Hematoxylin and eosin morphology. (a) AN lesion overview (magnification, ×10). (b) Papillomatosis pattern with usual ductal hyperplasia (magnification, ×40). (c) Papillomatosis pattern (magnification, ×20). (d) Mixed pattern (papillomatosis and adenosis; magnification, ×20). Adenosis pattern with (e) myoepithelial hyperplasia (magnification, ×40) and (f) keratocysts (magnification, ×20). AN, adenoma of the nipple..
