Breast calcifications are small areas of calcium in the breast. You cannot feel them.
Breast calcifications usually show up on a breast x-ray (mammogram). Calcifications are very common, and in most cases they are harmless. There are two types.
Macrocalcifications (benign coarse calcifications)
These areas of calcium look like large white dots or dashes on a mammogram. Macrocalcifications are sometimes called benign coarse calcifications. They are a natural result of breast tissue ageing and are harmless. They are not linked with cancer and don't need any treatment or checking.
Macrocalcifications are found in about half of all women over the age of 50, and in about 1 in 10 (10%) younger women. They may be caused by calcium deposits in a cyst or in milk ducts as women get older, or as a result of previous injuries or inflammation. Calcium in the diet does not cause calcifications to form.
These are tiny calcium deposits that show up as fine white specks on a mammogram. They are usually found in an area of the breast where cells are being replaced more quickly than normal.
Microcalcifications are not usually due to cancer. But a group of them in one area of the breast (a cluster) may sometimes be a sign of pre-cancerous changes or early breast cancer.