Many adult women have had the experience of having a medical checkup organized by their units and having the words “bilateral lobular hyperplasia” or “bilateral mammary gland hyperplasia” written on the report. The doctor will usually tell you, “Don’t be afraid, just review it regularly”. What exactly is breast enlargement all about, and do all breast enlargements not need treatment? If a woman of childbearing age between 20 and 50 years old goes for a breast checkup that includes palpation, ultrasound and X-ray, it is almost impossible to see the word “normal” in the checkup report. The most common diagnostic term is “bilateral lobular hyperplasia”. If there is only the word “hyperplasia” in the report, it basically means that the examinee’s breasts are normal. Mammary gland hyperplasia is divided into physiological hyperplasia and pathological hyperplasia, under normal circumstances, we see physiological hyperplasia process. What is physiological hyperplasia? The breast is an endocrine target organ, and the process of each menstrual cycle in every woman is the process of breast hyperplasia, where the cells in the breast proliferate and degenerate with the menstrual cycle, week after week. Women often find that their breasts swell up before menstruation, and then return to their original shape after menstruation, for this reason. But the problem is, every month the breast cells grow so much, but often can not retreat, the riverbed silt can be cleared of silt, but the cells in the milk ducts silt can not be scraped out like dead skin, so the breast hyperplasia appears. Doctors therefore also call hyperplasia “degenerative dysplasia”. What are the signs of mastocytosis? One of the more common conditions is breast pain. Patients often come to the doctor because of breast pain and worry if they have breast cancer. In fact, more than 95% of breast pain is not a symptom of breast cancer and patients do not need to panic. Many women feel a “lump” in their breast while they are in pain. If the swelling is symmetrical on the left and right side and changes around the time of menstruation, then it can be considered as a common enlargement. Is your enlargement a physiological or pathological one? The main tool is to see a specialist regularly for screening by means of mammography and mammogram.