1. Much of DCIS should be considered a “risk factor” for invasive breast cancer and an opportunity for targeted prevention.

  2. Radiation therapy should not be routinely offered after lumpectomy for DCIS lesions that are not high risk because it does not affect mortality.

  3. Low- and intermediate-grade DCIS does not need to be a target for screening or early detection.

  4. We should continue to better understand the biological characteristics of the highest-risk DCIS (large, high grade, hormone receptor negative, HER2 positive, especially in very young and African American women) and test targeted approaches to reduce death from breast cancer.”