Fluorescence Guided Surgery in Breast Cancer - The MARGIN-2 Study

This study (MARGIN-2) is testing a fluorescence dye imaging technique during breast-conserving surgery (lumpectomy) to help surgeons see the edges of a tumor more clearly and ensure the entire cancer is removed. **You may be eligible if...** - You are female, 18 or older - You have been diagnosed with breast cancer confirmed by biopsy - Your cancer is localized (has not spread) and is at least 0.5 cm in size - Your treatment team has recommended breast-conserving surgery (keeping the breast) - You have consented to participate **You may NOT be eligible if...** - You require a full mastectomy (complete breast removal) - You are pregnant or breastfeeding - You have a known allergy to the fluorescent dye used - You have inflammatory breast cancer or other conditions that make the technique unsuitable Talk to your doctor to see if this trial is right for you.