Mixed lumps in the mammary gland are considered to be inflammatory lesions of the mammary gland, such as mastitis, or breast tumors, such as fibroadenoma or breast cancer, etc. It is recommended that a more detailed examination be conducted to determine the nature of the pathology and to carry out targeted treatment. 1. Mastitis: Mastitis is categorized into lactating and non-lactating mastitis. The most important thing to remember is the fact that it is not a problem, but it is a problem that can be solved with the help of a lot of people who have a lot of money. The most common causes of non-lactating mastitis are blocked milk ducts, infections, smoking, etc. Symptoms include breast abscesses. 2. Mammary fibroadenoma: It may be due to the sudden increase in the sensitivity of fibroblasts to estrogen in the lobules of the mammary glands, and the symptom is usually a painless lump in the breast. 3. Breast Cancer: The causes of breast cancer are complex and varied, including hormonal effects, genetic factors, poor lifestyle and so on. The long-term effect of many factors leads to mutation, cancer, development and metastasis of breast epithelial cells. The main symptoms of breast cancer patients are localized symptoms such as breast lumps, nipple and areola changes, breast skin changes, and nipple discharge. Meanwhile, mixed lumps can also be seen in breast tuberculosis, plasma cell mastitis, granulomatous mastitis and other diseases. If mixed lumps are found in the breast, it is recommended to consult a regular hospital in time for examination and treatment under the guidance of a doctor in order to avoid delaying the condition.