Factors that may increase your risk of DCIS include:

  • Increasing age
  • Personal history of benign breast disease, such as atypical hyperplasia
  • Family history of breast cancer
  • First pregnancy after age 30
  • Taking combination estrogen-progestin hormone replacement therapy after menopause
  • Genetic mutations that increase the risk of breast cancer, such as in the breast cancer genes BRCA1 and BRCA2
Jun. 23, 2011