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- Associated with invasive breast cancer and DCIS
- Clustered, pleomorphic, in a ductal or linear distribution
- High grade DCIS – rod-shaped and branched. Also called casting or comedo microcalcifications – necrotic debris within ducts
Imaging
- Mammogram
- Most sensitive and recommended for picking calcifications
- Ultrasound
- Poor detection of microcalcifications and is not recommended for screening
- Aids percutaneous biopsy
- Differentials: skin calcifications (round, well defined, lucent centre, often bilateral and symmetrical), talcum powder