Microcalcifications are tiny specks of mineral deposits (calcium), that can be scattered throughout the mammary gland, or occur in clusters. Microcalcifications may indicate the presence of breast cancer as they are often associated with different kinds of tumors. Microcalcifications have no symptoms that a woman would notice herself, like a lump. Much of the time they are not associated with cancer, but in some instances they are associated with a very early development of breast cancer, and need to be investigated.
Just to let you know, this page is a little bit old, from around the year 2000. The new information about abnormal mammography screening programs is here.
This page, also on breast microcalcifications on mammogram, is good also, but this page is still good too.
Two basic types of breast microcalcifications
Microcalcifications often occur as one of two basic types: calcium oxalate dihydrate, or calcium hydroxyapatite. The calcium oxalate dihydrate particles are most often proven to be benign. For calcium hydroxyapatite particles, they are sometimes benign, sometimes malignant. New research is suggesting that calcium hydroxyapatite particles containing higher amounts of calcium carbonate and a smaller amount of protein are more likely to be benign.
Breast Microcalcifications tend to be described and categorized according to their form, size, density, and pattern of distribution. Different patterns tend to be more suggestive of malignancy than others. Microcalcifications are the most common finding in women with non-palpable breast lesions, and a vital early diagnostic indicator in the screening and staging of potentially malignant breast lesions.
Patterns of microcalcifications can suggest malignant breast cancer nearby
Probably the earliest indication of potential breast cancer as viewed on a screening mammogram is the presence of microcalcifications. Most microcalcifications are due to benign causes, but some patterns, such as fine, pleomorphic microcalcifications, would be suspicious for malignancy, probably requiring additional studies and short-term follow-up.
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