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Updated: Sep 30, 2025

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery
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When the clipped node goes missing, CT guided SAVI SCOUT placement: A novel approach for localizing soft tissue
Andrea Lifrieri1, Sarah Fuzesi2, Elise Desperito3
1Department of Surgery, Columbia University Medical Center, New York, NY, United States of America.
Abstract:
Axillary staging in breast cancer is performed with physical exam and axillary imaging. Suspicious lymph nodes are biopsied and clipped prior to surgery to identify the previously biopsied node during surgery. Conventional mapping techniques of blue dye and radioisotope do not always accurately identify the clipped lymph node and therefore many techniques have been described to improve the identification of the clipped lymph node. Most of these techniques rely on axillary ultrasound to identify the previously biopsied lymph node or previously placed clip. A marker such as a fiducial reflector is then placed percutaneously. In this case report we describe a novel technique of Computed tomography (CT) identification of a previously clipped lymph node with CT guided placement of a fiducial reflector (SAVI SCOUT). The SAVI SCOUT was then identified and successfully excised with the previously biopsied lymph node. A PRECIS: CT guided placement of SAVI SCOUT is a novel technique for the identification and retrieval of a previously biopsied axillary lymph node in breast cancer patients.
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