Introduction: The most significant predictor for recurrence in breast-conserving surgery (BCS) is margin status with positive margins predictive of a 50% recurrence rate (1). Various methods such as intraoperative USS have been utilized to reduce positive margin rates but often increase operating time and require additional resources. Similar to traditional hookwire localization, SCOUT is another method of localizing impalpable lesions for BCS. It utilizes a radar guidance system which provides feedback on the direction and distance of the reflector from the probe. We propose a novel method of intraoperative margin assessment using SCOUT technology which requires no additional tools or resources. Methodology: A 3-dimensional model of the lesion and therefore margins were constructed based on routine preoperative imaging and SCOUT intraoperative data. A comparison of margin status for wide local excisions (WLE), performed at SAWMH by two breast surgeons, was conducted between traditional hookwire methods and this novel SCOUT technique. Results: Of the first 100 SCOUT WLE performed, utilizing this technique and determined to have a clear margin intraoperatively, 0% required further re-excision. The re-excision rate for hookwire was 11%. Conclusion: This novel method of using SCOUT technology is an efficient, accurate and effective method which requires no additional resources. These findings are especially relevant in regions where intraoperative specimen X-ray is not readily available. 1.Choe AI, Ismail R, Mack J, Walter V, Yang AL, Dodge DG. Review of Variables Associated With Positive Surgical Margins Using Scout Reflector Localizations for Breast Conservation Therapy. Clinical Breast Cancer. 2022;22(2):e232-e8.