Tan Elizabeth, Issac Michael, Barry Peter
General and Breast Surgery, The Northern Hospital, Melbourne, AUS.
Breast Surgery, The Northern Hospital, Melbourne, AUS.
Cureus. 2025 May 6;17(5):e83601. doi: 10.7759/cureus.83601. eCollection 2025 May.
Langer's axillary arch (LAA) is the most common accessory muscle encountered during axillary surgery. We present a 55-year-old lady who underwent a right wide local excision and sentinel lymph node biopsy. Intraoperatively, we identified an aberrant muscle slip traversing the axilla, anterior to the neurovascular structures. It originated from the latissimus dorsi muscle and inserted into the pectoralis major. This report explores the current knowledge of LAA and discusses the importance of recognising it intraoperatively in the era of minimisation of axillary surgery. Implications of failing to recognise it include suboptimal regional control, compromised oncological treatment, or neurovascular injuries.
朗格腋弓（LAA）是腋窝手术中最常见的副肌。我们报告一位55岁女性，她接受了右侧广泛局部切除及前哨淋巴结活检。术中，我们发现一块异常肌束横过腋窝，位于神经血管结构前方。它起自背阔肌，止于胸大肌。本报告探讨了目前关于朗格腋弓的知识，并讨论了在腋窝手术微创时代术中识别它的重要性。未能识别它的影响包括区域控制不佳、肿瘤治疗受影响或神经血管损伤。
