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DOI: 10.1055/s-0044-1786072
Radar reflectors for marking of target lymph nodes in patients receiving neoadjuvant chemotherapy for breast cancer – a subgroup analysis of the prospective AXSANA (EUBREAST-03) trial
Authors
Background: Axillary staging procedures in clinically node-positive (cN+) breast cancer patients undergoing neoadjuvant chemotherapy vary across countries. Different techniques are available for marking of target lymph nodes (TLN).
Methods: AXSANA is an international prospective study including cN+patients converting to ycN0 status. In this subgroup analysis, we focus on patients receiving a radar reflector marking of the target node.
Results: A TLN was marked using a radar reflector in 123 patients prior to neoadjuvant chemotherapy. Most patients (52%) had one suspicious node at time of diagnosis, followed by two (26%) and≥3 nodes (22%). 22 patients received MRI between marker placement and surgery and in 5 (23%) artifacts were visible. However, only in one (20%) of these patients, tumor assessment by MRI was limited by such artifacts. 81% of patients converted to ycN0.93 patients had undergone surgery at the time of analysis. Most patients (93%) received targeted axillary dissection, 3% underwent primary axillary dissection and 1% TLN biopsy. In 83 out of 85 patients (98%), the TLN was identified and removed. In one patient, no lymphatic tissue was identifiable in the tissue specimen containing radar reflector, so it remains unclear whether the TLN was excised or the reflector had dislocated. In another patient, the radar reflector was not identified intraoperatively but postoperative CT confirmed removal. Thus, no radar reflectors were left behind.
Conclusion: This is the largest prospective series of patients receiving a radar reflector for TLN marking prior to neoadjuvant chemotherapy, demonstrating very high detection and removal rates of TLN and marker.
Interessenskonflikt:
Ich erkläre als korrespondierende/r AutorIn, dass ich oder einer bzw. mehrere meiner Ko-AutorenInnen während der letzten 3 Jahre wirtschaftliche oder persönliche Verbindungen im oben genannten Sinne hatten: Interessenskonflikt Details: Maggie Banys-Paluchowski: Honorare für Vorträge und beratende Tätigkeiten: Roche, Novartis, Pfizer, pfm, Eli Lilly, Onkowissen, Seagen, AstraZeneca, Eisai, Amgen, Samsung, Canon, MSD, GSK, Daiichi Sankyo, Gilead, Sirius Medical, Syantra, resitu, Pierre Fabre, ExactSciences; Studienunterstützung: EndoMag, Mammotome, MeritMedical, Sirius Medical, Gilead, Hologic, ExactSciences; Erstattung von Reise- und Kongresskosten: Eli Lilly, ExactSciences, Pierre Fabre, Pfizer, Daiichi Sankyo, Roche. Keine weiteren COIs gemeldet.
Publication History
Article published online:
03 May 2024
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