Surgical Excision vs Neoadjuvant Radiotherapy+Delayed Surgical Excision of Ductal Carcinoma

This trial is comparing standard surgery alone versus a short course of radiation before surgery for ductal carcinoma in situ (DCIS) — a non-invasive type of breast cancer found on imaging — to see if pre-surgery radiation reduces the chance of cancer coming back. **You may be eligible if...** - You are a woman 18 or older - You have been diagnosed with DCIS detected by mammogram or MRI (not felt as a lump) - The DCIS area measures 4 cm or less - Your diagnosis was made within the last 16 weeks and a biopsy marker has been placed in the tumor area **You may NOT be eligible if...** - Your DCIS was felt as a palpable lump - You have invasive breast cancer - You have had prior breast radiation or relevant prior surgeries Talk to your doctor to see if this trial is right for you.