Calcification of breast nodes is not necessarily cancer, it depends on the situation. Calcification of breast nodes means that there are calcification points or calcification foci on top of the nodes. It is recommended to do mammogram first, if it is 4a and above, it is recommended to do biopsy to clarify the nature of the nodes, after all, the gold standard for cancer diagnosis is pathology. If the nodule is 4a or above and there are no other symptoms, it can be observed and reviewed regularly. If the nodule is large and coarse, it is very likely to be benign. If the nodule is microcalcified, the possibility of malignant changes in the form of fine sediment is greater, it is still recommended to do a biopsy to obtain pathology to determine its nature, in order to prepare for the next step of treatment.