-Lobular hyperplasia- In daily life, people often refer to benign lumps in the breast as lobular hyperplasia, but this designation is not scientific. Lobular hyperplasia is just a pathological change in the early stage of breast enlargement. When estrogen increases before menstruation, interstitial edema can occur and lobules increase, causing swelling and even nodules in the breast, so it is called lobular hyperplasia. After the onset of menstruation, with the decline of estrogen, the above reactions subside, and these are physiological reactions. No special treatment is usually needed. Cystic hyperplasia Cystic hyperplasia follows lobular hyperplasia when there is ductal expansion or even cystic expansion of the breast tissue, so it is called cystic hyperplasia or cystic disease. Cystic hyperplasia is characterized by mild swelling and pain in the breast, but the lump is relatively obvious, and it increases significantly a few days before menstruation, accompanied by pain, and after menstruation the lump shrinks and the pain disappears, showing cyclical changes. In general, no treatment is needed. For those who suffer from pain, warming the yang and tonifying the kidneys can be used during the first half of menstruation to promote luteal production, while the second half of the period, the use of such drugs can be stopped and replaced by the treatment of draining the liver and Qi. Fibroadenoma of the breast Mammary gland hyperplasia can be accompanied by fibroplasia at a later stage, forming fibroadenoma of the breast, which is a benign tumor, mostly occurring in women aged 20 to 25 years old, ovoid in shape, with smooth surface, hard texture and clear borders, usually diagnosed only by ultrasound. Fibroadenoma is the most common benign tumor of the breast and usually does not require surgical removal. Pre-cancerous breast lesion Pre-cancerous breast lesion is a morphologically abnormal proliferation of breast epithelial cells, which can develop into breast cancer in some cases after follow-up. 2003 World Health Organization (WHO) breast pathology in the catalog of major categories, the first is invasive cancer, followed by pre-cancerous lesions. Pre-cancerous lesions are divided into four categories: lobular tumors, intraductal proliferative lesions, microinvasive ductal carcinoma and intraductal papillary tumors. Breast cancer Some patients with early stage breast cancer are not yet able to touch a definite lump, but they often have local discomfort, especially postmenopausal women who sometimes feel mild pain and discomfort in one breast, or sinking, soreness and discomfort in the back of one shoulder, even involving the upper arm on that side. In early stage of breast cancer, a lump of bean size can be palpated in the breast, which is hard and movable. There is usually no obvious pain, but a few have paroxysmal vague, dull or stabbing pains. The skin at the breast lump is elevated, and some local skin is orange peel-like, or even edematous, discolored, eczema-like changes, etc. The nipple near the center is accompanied by nipple retraction. The skin of the breast is mildly sunken (medically called “dimples”), the nipple is eroded, the nipple is asymmetrical, or the skin of the breast is thickened and thickened with enlarged pores (medically called “cellulite”). If the nipple discharge is bloody or plasma blood, special attention should be paid to further examination. Regional lymph node enlargement, most often in the ipsilateral axillary lymph nodes. The supraclavicular lymph node enlargement is already advanced. In addition, estrogen is one of the prerequisites for the development of some breast tumors. The onset of breast cancer ranges from 18 to 70 years of age, mostly between 30 and 60 years of age, and should be closely monitored especially in women who have been using estrogen replacement therapy for more than 10 years.