Related Experiment Video
Updated: Feb 10, 2026

Single-Port Robotic-assisted Transaxillary Breast-conserving Surgery: A Prospective, Single-arm, Non-randomized Phase IIa Clinical Trial
Published on: August 19, 2025
Surgical management modifications following systematic additional shaving of cavity margins in breast-conservation
Delphine Héquet1, Alexandre Bricou, Yann Delpech
1Obstetrics and Gynecology Department, Lariboisière Hospital, Assitance Publique-Hôpitaux de Paris, Paris, France.
Background:
Positive wide local excision margins are the most important risk factor of local breast-carcinoma recurrence. Shaving additional margins could lower the need for re-excisions when wide local excision margins are positive and cavity margins are negative.
Materials And Methods:
This retrospective study, from January 2007 to December 2008, included 99 women with breast carcinomas who underwent wide local excision with 4 additional, systematically shaved, surgical cavity margins. All therapeutic decisions concerning post-wide local excision treatment were made by consensus during multidisciplinary meetings.
Results:
This systematic cavity-shaving strategy avoided 25 re-excisions (25.3%), and 6 patients required new surgery because of carcinoma found in the additional cavity-shaving margins, despite negative wide local excision margins. No preoperative factor predictive of positive cavity margins was identified.
Conclusions:
Systematic shaving of additional cavity margins changed the surgical management after breast-conservation treatment.
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