Is it normal for the breasts to be different sizes on each side?

The two sides of the breast size is not the same, may be a normal situation, there may be mastitis, fibroid tumor, breast cancer and other lesions abnormal situation.
1. Normal situation: human development is not complete symmetry, the two sides of the breast may appear different sizes. However, the difference is usually not obvious and does not require special treatment.
2. Mastitis: It is a common infectious disease that occurs when bacteria and viruses attack the breasts, resulting in mastitis lesions. The side of the breast may be red and swollen, may appear to enlarge the situation, need antibiotic drugs such as penicillin for treatment, if the formation of obvious abscess, then need to be localized abscess incision and drainage.
3. Fibroma: most fibroma lesions do not lead to significant differences in the size of the two breasts, only some patients with very large fibroma lesions, the diameter of the lesion in the dozen centimeters or so, which can lead to breast size differences. Surgery is needed to remove the lesion and improve the breast size.
4. Breast cancer: the lesion is small at the early stage, with the development of the lesion, the lesion gradually becomes bigger and infiltrates into the surrounding tissues, which can lead to the enlargement of the breast and breast pain. The lesion can be diagnosed through puncture biopsy and pathological examination, and requires comprehensive treatment such as surgery, radiotherapy and chemotherapy.
In addition, breast cysts and trauma to the breast may also present similar clinical manifestations. The causes of the different sizes of the two breasts are complex and should be clarified and treated under the guidance of a doctor.