Conclusion: The clasification of hyperplastic disease of breast into hyperplasia and fibroadenoma is easy in defining morphological characters for the diagnosis.

• 结论：将乳腺增生病分为单纯性及非典型增生两大类是可行的，其形态学特征易于掌握，非典型增生与乳腺癌的发生密切相关，值得注意。