Many patients often come for examination because of “lobular hyperplasia”, and some patients carry a great psychological burden because they have been diagnosed with “lobular hyperplasia” and keep seeking medical advice. The normal female breast is regulated by the endocrine cycle of the ovary and produces corresponding cyclical changes – the proliferation and reversion of breast tissue, so this is a physiological change that accompanies women almost all their lives. Because of the complexity and diversity of its forms, it is difficult to find a suitable umbrella term to summarize it, so there are many different names, the more common ones are: breast adenopathy, fibrocystic disease, structural dysplasia, cystic hyperplasia, etc. In essence, it is a non-inflammatory, non-tumor, but physiological hyperplasia and reversion caused by the normal structure of the breast disorder. The actual incidence is higher than the clinical diagnosis, so many doctors suggest that it should not be classified as a “disease”. Most people have no obvious symptoms, but a few have periodic breast pain that resolves after menstruation, and some can be felt as thickened or lumpy breasts. Ultrasonography can reveal structural disorders of the breast, cysts, dilated ducts, and nodular changes. Normal breast enlargement does not increase the risk of breast cancer unless it is pathologically confirmed as atypical hyperplasia, and the risk of invasive breast cancer is four to five times higher than that of the general population. Therefore, if you are diagnosed with lobular hyperplasia, there is no need to be nervous. If you are over 40 years old, you should have a routine breast examination once a year.