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Mammogram - calcifications


Calcifications are tiny deposits of calcium in your breast tissue. They are often seen on a mammogram.

Alternative Names:

Microcalcifications or macrocalcifications; Breast cancer - calcifications; Mammography - calcifications


The calcium you eat or take in as medicine does not cause calcifications in the breast.

Most calcifications are not a sign of cancer. Causes may include:

  • Calcium deposits in the arteries inside your breasts
  • History of breast infection
  • Noncancerous (benign) breast lumps or cysts
  • Past injury to the breast tissue
  • Powders, deodorants, or ointments that are placed on the skin

Large, rounded calcifications (macrocalcifications) are common in women over age 50. They look like small white dots on the mammogram. They are most likely not related to cancer. You will rarely need more testing.

Microcalcifications are tiny calcium specks seen on a mammogram. Most of the time, they are not cancer. However, these areas may need to be checked more closely.


When microcalcifications are present on a mammogram, the doctor (a radiologist) may ask for a larger view so the areas can be examined more closely.

Calcifications that do not appear to be a problem are called benign. No specific follow-up is needed.

In most cases, calcifications that are slightly abnormal but do not look like a problem are also called benign. Most women will need to have a follow-up mammogram in 6 months.

Calcifications that are irregular in size or shape (spiculated), or tightly clustered together, are called "suspicious calcifications." Your health care provider will recommend a stereotactic core biopsy. This is a needle biopsy that uses a type of mammogram machine to help find the calcifications.

Most women who have suspicious calcifications do not have cancer.


Bartella L, Smith CS, Dershaw DD, Liberman L. Imaging breast cancer. Radiol Clin North Am. 2007. Jan;45(1):45-67.

Davidson N. Breast cancer and benign breast disorders. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 204.

James JJ, Wilson M, Evans AJ. The breast. In: Adam A, Dixon AK, Gillard JH, et al. eds. Grainger & Allison's Diagnostic Radiology: A Textbook of Medical Imaging. 6th ed. New York, NY: Churchill Livingstone; 2014:chap 69.

Review Date: 11/4/2014
Reviewed By: John A. Daller, MD, PhD., Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, AR. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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