Age 18-69 years old,

Regardless of gender,

Breast masses were diagnosed by histology and pathology, stage II -III.

Clinical palpation of axillary lymph nodes is positive, or

Axillary lymph node puncture pathology is positive, or

The multidisciplinary treatment cooperation group (MDT) recommends axillary lymph node dissection,

Good physical state score (0-2),

No severe organ complications,

No congenital or acquired diseases affecting the normal morphology and functional activities of the upper limbs,

Informed consent, understanding and compliance with research requirements.

Effect of ALND With Vein Branches Reservation on Postoperative Upper Limb Edema and Dysfunction in Breast Cancer