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Stepwise Limited Axillary Lymph Node Dissection Based on Lymphatic Drainage from the Breast to Decrease Breast
Qianqian Yuan1, Jinxuan Hou1, Rui Zhou1
1Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, People's Republic of China.
Background:
Comprehensive axillary surgery is associated with an elevated rate of morbidity. This trial aimed to demonstrate the feasibility of axillary dissection of lymph nodes from the breast (bALND) for the purpose of limiting the extent of surgery.
Methods:
Patients enrolled from two tertiary referral centers from September 2018 to September 2019 were randomly allocated to two groups: bALND and standard axillary lymph node dissection (sALND). In the bALND group, the sentinel lymph node was filled with 0.1 ml methylene blue before resection. Then, bALND based on lymphatic drainage was subsequently performed. Lymph nodes at each breast lymphatic level and lymph nodes at Berg levels were sent for separate pathological examination. Arm lymphedema, locoregional recurrence, and distant metastasis were documented.
Results:
In the bALND group, lymphatic vessels and subsequent-echelon lymph nodes from the breast were stained blue after injection of methylene blue in 404 (89.0%, 404/454) cases, and 57.8% (228/394) of the patients harbored fewer than four metastatic nodes. With a median follow-up of 18 months, the incidence of arm lymphedema was 6.6% (26/394) in the bALND group versus 13.7% (60/438) in the sALND group (p = 0.008), while regional recurrence presented no difference between the two surgical procedures (0.76% vs 0.68%, p = 0.896).
Conclusion:
For node-positive breast cancer patients, bALND based on lymphatic drainage is a less radical axillary surgery that can eliminate morbidity without impairing cancer control.
