How often are breast microcalcifications not cancerous?

Most are not. An overwhelming majority of women with microcalcifications seen on mammography have no breast disease. A small subset of these women will have microcalcifications that are deemed "suspicious" for cancer, warranting a (stereotactic) biopsy. Of these suspicious microcalcifications, cancer will be found 15-30% of the time.
12.7% in one study. Calcifications come in various types, some more suspicious such as clustered or linear branching. One large prospective study found a positive predictive value of 12.7%. Reference is radiology. 2009;250(3):648.
Not often. Apparently 80 % of microcalcifications are benogn. They themselves are not cancerous. Sometimes, if cancer is suspected, and these are seen, a repeat mammogram may be done to see if there are changes. Sometimes tight clusters of these might mean early breast cancer. Sometimes biopsy might be done.

Related Questions

Does anybody know about breast microcalcifications that are not cancerous?

Most are not. There are many causes of microcalcification in the breast, like fibroadenonma, fat necrosis, cysts etc. See this site for more info. http://www.mayoclinic.com/health/breast-calcifications/my00101. Read more...

Wanted to know if clusters of microcalcifications mean you have breast cancer?

Possibly. While stable calcifications over time (ie years) on a mammogram are less likely to be due to cancer, any changing calcifications are likely to come with the recommendation for a biopsy because of the correlation between changing calcifications and cancer. The pattern of calcifications is interpreted by the radiologist as suspicious or benign. . Read more...

How can breast cancer differ with a lump compared to microcalcifications?

See below. A breast lump that you can feel is likely a more advanced breast cancer compared to micocalcifications. Micricalcificatons only has a 10-15% chance of having cancer & likely to represent a very small and very early cancer if malognant (or non-invasive, in situ). Read more...

Can you have breast cancer without microcalcifications? Mammogram shows nodules, but no microcalcifications. 3mm, 9mm, and 7mm. All asymmetry

Possible. There are several mammographic characteristics that suggest benignity or malignancy, but we can't use any of them in isolation to make such an important decision diagnostically. All characteristics should be used in unison, and if doubt still exists then a biopsy or lumpectomy should be pursued. Read more...
See Disclaimer. A typical mammogram will often cite a disclaimer stating something like a negative mammogram cannot exclude a malignancy. That means you cannot draw broad blanket conclusions, one way or the other, about micro-calcifications. You should have your breasts evaluated further by a breast surgeon. Read more...
Yes. Up to 80% of breast cancers do not produce mammographic calcifications. The level of suspicion, and therefore the decision to ignore, follow up, or biopsy, solid nodules is based on a variety of mammo/ultrasound features in addition to whether or not there are suspicious microcalcs. Read more...

Is breast cancer risk increased with suspicious bilateral microcalcification clusters and large thickened nodule w/neg. Us? How much?

Walk B4 U Run. Breast microcalcifications are very common, some of which may be associated with cancer. Radiologists will deem those suspicious enough to warrant biopsy as "birads 4 or 5". If so, the next step is to have a (nonsurgical) biopsy for definitive diagnosis. A nodule seen on mammography but not on ultrasound will also be categorized as above. Your next step is to speak w/the dr. Who ordered the mamm. Read more...
Yes. When you state that you have "suspicious" microcalcifications the radiologist means suspicious for cancer or a disease called dcis which is precancerous you should receive a birads number after a mammogram and a sono .It sounds like your birads number is a 4 which means a biopsy is advised you should definitely discuss the findings with your physician. Read more...

44 no fam hx breast cancer. Mammo shows small cluster microcalcifications. I do have fibroglandular density with birad 2. Don't smoke, high caffeine?

BiRads II? If your mammogram was read as Birads 2 you have less to worry about. BI-RADS II is a benign category. A cluster of microcacifications can be worrisome for breast-cancer. You should probably clarify this result with your doc to make sure no further testing is needed as the results seem contradictory. Best wishes! Read more...

History invasive breast cancer, US of thyroid show multiple solid nodule, largest 1.5 CM w/microcalcifications & hypervascularity. Odds of malignancy?

Possible. most likely your doctor will do aspiration biopsy ( FNS ) in the office wait for the results , in general prognosis is excellent in most of the thyroid cancers . 44 yr old can expect cure , speak to your doctor. Read more...

No family history of breast cancer. 44 years old. Mammo shows small cluster of microcalcification in mlo view only of upper right breast. I do consume very high levels of caffeine. Do not smoke. Healthy diet and exercise. First abnormal Mammo. I do ha

See OB/GYN MD asap. Your question is cut-off, but from what is visible it is imperative that your 2D mammo findings of mircocalcification be followed up -- clinical breast exam, comparison to previous studies, consideration of MRI of breast and/or 3D Ultrasound. Do not ignore finding on your last mammo. Read more...
This is a common. finding Mammograms pick up both in malignant and Non malignant Breast conditions. POINT IS IT ABSOLUTELY NEEDS FOLLOW UP by a Breast Specialist! The Provider who ordered the study should be your first contact! Hope this helps! Dr Z. Read more...