This study plans to find the most suitable lymph node cortex thickness and abnormal lymph node features to define suspicious lymph nodes. Then, ultrasound-guided core needle biopsy of axillary lymph nodes will be done, aiming to provide some guidance for the biopsy.
Age ≥18 years and <70 years;
Histologically confirmed primary breast cancer;
Underwent ultrasound examination to assess axillary lymph node metastasis status.
Presence of other malignancies (e.g., lymphoma, lung cancer, thyroid cancer, etc., with axillary metastasis);
Pregnant or lactating women;
Previous receipt of neoadjuvant radiotherapy or chemotherapy;
Lymph node metastasis status not confirmed by pathology, or time interval between ultrasound examination and pathological confirmation exceeding 6 weeks.
The First Hospital of Jilin University
Lead sponsor
Siping Central People's Hospital
Collaborator
Baicheng Central Hospital
Collaborator
Jilin Central General Hospital
Collaborator