When a breast nodule develops secondary calcification, prompt medical attention is needed. There are two types of breast nodule calcification, benign calcification and malignant calcification. 1. Benign calcification: Benign calcification is usually a more obvious and gross calcification. There is no obvious lump in this benign calcification. Some of these benign calcifications are breast fibroids, and if they are very long then they may form a ring, and these are larger calcifications. 2. Malignant calcification: malignant calcification is usually very small gravel-like calcification, in the form of a mass or cluster distribution of calcification, if the gravel-like calcification is accompanied by obvious lumps, then it is extremely likely to occur breast cancer. When calcification occurs in the breast, you need to go to a specialized hospital to find a professional doctor to identify the benign and malignant. It is also necessary to go to the hospital for further examination.