Diseases and Conditions

Ductal carcinoma in situ (DCIS)

Risk factors

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
  • Never having been pregnant
  • Having your first baby after age 30
  • Having your first period before age 12
  • Beginning menopause after age 55
  • Genetic mutations that increase the risk of breast cancer, such as those in the breast cancer genes BRCA1 and BRCA2