Pleomorphic or Heterogeneous Calcifications
Heterogeneous or pleomorphic calcifications in and of themselves are not associated with a benign or malignant process. However, a cluster of calcifications irregular in shape, size, and tend to be <0.5mm raises suspicion.

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Fine Linear or Branching Calcifications
These are thin, irregular calcifications that appear linear from a distance. Closer examination reveals that they are distinct and <1mm in width. They result from irregular calcifications of necrotic tumor in the lumen of a duct involved irregularly by breast cancer.