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

Inclusion Criteria: * 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. Exclusion Criteria: * Pregnancy or lactation, * Inflammatory breast cancer, * Clinical findings of metastatic lesions, * Sentinel lymph node biopsy was negative, * History of upper limb or shoulder, chest, back trauma or surgery, * Previous history of local radiotherapy, * History of other tumors, * Vascular embolic disease, * Those who are unable to comply with the clinical trial requirements for any reason.