Clusters of tiny calcifications in the breast are the result of imaging tests and may be caused by breast fibroadenoma, breast hyperplasia, breast cancer and other diseases. 1. Breast fibroadenoma: Breast fibroadenoma is mainly caused by the abnormal increase in the sensitivity of breast tissue to estrogen. Most patients do not have obvious symptoms, while some patients may have symptoms such as dull pain, hidden pain and lumps. Breast fibroadenoma may cause the patient’s imaging findings to show clusters of tiny calcifications in the breast. 2. Breast hyperplasia: Breast hyperplasia is mainly related to endocrine dysfunction, and the main symptoms of patients are breast pain, nodules and lumps. Breast hyperplasia can also lead to clusters of small calcifications in the breasts when the patient undergoes imaging. 3. Breast cancer: The cause of breast cancer is still unclear, and it is considered to be due to various factors such as heredity. The main symptoms of breast cancer are breast lump, breast skin abnormality, nipple and areola abnormality, etc., which will also lead to the clustered fine calcification of the breast in the imaging test result of the patient. If the patient’s imaging results show clusters of small calcifications in the breast, the patient should consult a doctor and follow the doctor’s instructions.