The distribution of small coarse calcification in the upper part of the posterior areola area is considered to be related to breast trauma, mastitis, breast cysts, breast cancer, and so on. 1. Breast trauma: when some people suffer from trauma to the breast area, small coarse calcifications can be seen in the posterior areola area in the upper outer cluster of the distribution of small coarse calcifications. 2. Mastitis: the disease is related to milk stagnation, bacterial infection, trauma and so on. Some patients may find small coarse calcifications during examination due to localized breast cell damage, and patients with mastitis are usually prone to other symptoms such as breast swelling and pain and elevated skin temperature. 3. Breast cysts: The cause of breast cysts is not clear, but may be related to hormonal changes in the body, trauma and so on. Usually patients do not have obvious symptoms, but may also be accompanied by lumps in the breast, swollen lymph nodes in the armpit and other symptoms. When breast cysts lead to the death of breast cells, there may also be small and coarse calcification in the posterior areola area. 4. Breast cancer: the disease may cause some patients to have small coarse calcification in the posterior areolar area. The cause of breast cancer is not clear, may be related to genetic factors, exposure to radiation, etc. Patients are also prone to breast lumps, breast skin abnormalities, nipple discharge and other symptoms. It is recommended that patients with small, coarse calcifications in the posterior areola area should consult a doctor for examination, so that the situation can be clarified and treatment measures can be taken according to the doctor’s instructions. Pay attention to breast care and try to wear cotton and loose underwear.