Table 7

Risk of breast cancer in ipsilateral breast, relative to risk in contralateral breast, in relation to type of mammographic calcification on screening mammograma

Calcification classificationIpsilateral breastContralateral breastRRb (95% CI)
No calcification2912931.0 (reference)
Nonepithelial, class 514180.8 (0.4–1.7)
Epithelial, class 41321460.9 (0.7–1.2)
Epithelial, class 387761.2 (0.8–1.7)
Epithelial, class 268531.4 (0.9–2.1)
Epithelial, class 12693.1 (1.5–7.4)
  • a Based on prior screening mammograms in 547 women with breast cancer.

  • b RR for each calcification class adjusted for other classes of calcifications in the same breast.