The mammogram is first checked by the technologist and then read by a diagnostic radiologist , a doctor who specializes in interpreting x-rays. The shape of a mass can be important, too. Breast cancer, in contrast, often has an irregular outline with finger-like extensions.
Many mammograms show nontransparent white specks.
These are calcium deposits known as calcifications. Macrocalcifications are coarse calcium deposits. They are often seen in both breasts. Macrocalcifications are most likely due to aging, old injuries, or inflammations. They usually are not signs of cancer.