Clinical Research Directory

Inclusion Criteria: 1. The patient himself has very high requirements for beauty, and requires no scar on the chest; 2. No chest surgery and radiotherapy. 3. No contraindications to surgery and anesthesia. 4. Clinical I, stage of early breast cancer and the breast has an appropriate volume, can maintain a good breast shape after surgery. 5. Patients in the clinical period who meet the standard of breast conservation surgery after preoperative treatment. 6. Age: 18 and 65 years old. Exclusion Criteria: 1. Inflammatory breast cancer. 2. The tumor is extensive and it's difficult to achieve negative margins or an ideal breast - conserving appearance. 3. Diffusely distributed malignant - characteristic calcifications. 4. The margin is positive after local extensive tumor resection, and a negative margin in pathological examination still can't be ensured after re - resection. 5. The patient refuses.