This is atypical ductal epithelial hyperplasia of the breast. A significantly increased risk (5 times normal) for breast carcinoma occurs with cytologically atypical epithelial hyperplasia.

• 乳腺导管上皮细胞非典型增生。上皮细胞非典型增生出现使乳腺癌风险明显增加（是正常值的5倍）。