New Orleans—A delay in the initiation of radiation therapy of more than eight weeks after breast-conserving surgery (BCS) for ductal carcinoma in situ (DCIS) is associated with a significantly higher rate of subsequent ipsilateral breast tumors, according to an evaluation of cancer registry data. After adjusting for propensity, the increased risk was about 26% (P=0.049) over an average follow-up of 72 months.
“This study shows that it is important for women to understand the