Ductal Breast Carcinoma In Situ

This is a prospective, non-interventional (observational) cohort study conducted within the medical network of the participating investigators and institutions. Patients meeting the eligibility criteria (see below) will be eligible for participation and the investigators will obtain written informed consent. A central Institutional Review Board (IRB), WCG IRB, will approve the protocol and each participating institution.

This trial studies the acceptability and how well decision making tool works in supporting decision making in contralateral prophylactic mastectomy in patients with newly diagnosed breast cancer. Decision making tool may help patients with early stage breast cancer make decisions regarding their surgical options.

The purpose of this pilot study is to compare by pathological findings surgical excision versus neoadjuvant radiotherapy followed by delayed surgical excision of ductal carcinoma in situ (DCIS)

The goal of this study is to evaluate 5 days vs. 9 days of whole breast radiation.

Hypofractionated breast radiotherapy with concomitant tumor bed boost for early breast cancer or ductal breast carcinoma in situ after partial mastectomy