The second Sunday in May is Mother’s Day, when everyone is concerned about the already elderly mother, the health of new mothers or soon-to-be adult mothers, especially newborn babies’ food bank – “breast”, has been neglected, acute mastitis during lactation, breast cancer during pregnancy The incidence of acute mastitis during breastfeeding and breast cancer during pregnancy is on the rise. Experts suggest that women who plan to make a baby should have a pre-pregnancy breast examination before they get pregnant. Breast fibroadenoma may become “bad” due to pregnancy: If you have breast hyperplasia before pregnancy, will it become cancerous with the increase of breast size after pregnancy? Experts say that breast enlargement and breast cancer are not necessarily related, and there may be confusion between breast enlargement and breast cancer, or breast enlargement and breast cancer at the same time. Since breast enlargement is benign and generally does not deteriorate, pregnant women do not need to worry too much about it, and for the safety of the baby should not blindly use medication to avoid a major impact on the fetus. Breast fibroadenoma is also a common disease among young women, so will breast fibroadenoma worsen in pregnant women? Experts say that the incidence of breast fibroadenoma is higher among young women, although it is a benign disease, but due to the hormone level changes in the body after pregnancy, it will promote the breast fibroadenoma to increase significantly within a short period of time, and even become malignant lobular tumors, and there is no shortage of such patients in the outpatient clinic. If breast cancer is found during pregnancy, it is generally recommended to stop the pregnancy. Because of the process of pregnancy, estrogen rises, which will accelerate the deterioration of the disease. Five years after breast cancer surgery, after endocrine therapy, hormone levels adjusted to within the normal range, can still be pregnant.