The first thing I’d like to do is to make sure that I’m not doing a minimally invasive biopsy or surgery on a benign lump over 2.5 cm. 4. multiple benign breast nodules, do not force me to do it all, that is, after the ultrasound will still have nodules. The significance of McMurdo is to biopsy the relatively dangerous ones to do pathology and other observations. Lv Pengwei, Breast Surgery Department, First Affiliated Hospital of Zhengzhou University 5. To do surgery, not only the size of the incision should be taken into account, for unmarried women, it is more important to consider the function of breastfeeding in the future. 6. The McMerton system is a good technique with many advantages, as follows. But it is important to master the indications. Breast Mammotome Minimally Invasive Rotational Biopsy and Surgery The Mammotome vacuum-assisted minimally invasive rotational biopsy system is the most advanced minimally invasive breast biopsy system in the world, which allows repeated sampling of suspicious breast lesions to obtain histological specimens of the breast, providing a better method for early detection and diagnosis of breast cancer, as well as a technical basis for minimally invasive excision of benign tumors. 1. Precise localization Accurate biopsy: Deep breast lesions and tiny tumors with a diameter of about 5 mm can be accurately biopsied, whereas in the past, such masses could be detected by ultrasound, but the surgeon could not reach and locate them, and they could not be precisely removed by surgery. 2. Small incision and satisfactory appearance: Compared with the incision of 3-5 cm in traditional surgery, the incision of McMurdo surgery is only 3-5 mm, no suture is needed, and there is no obvious scar. Multiple tumors can be removed through the same incision, which has obvious advantages for deep tumors and breast enlargement. 3. Unique design, safe puncture: the unique hollow needle design, the whole operation is punctured only once, avoiding tissue damage caused by repeated punctures and needle tract transfer of tumor cells. 4. Large tissue volume, accurate pathology: biopsy of suspicious lesions can obtain large and continuous specimens, and the sample volume taken in one puncture is more than 5 times that of general hollow needles, obtaining the same pathological diagnosis as that of open surgical biopsy, avoiding leakage and misdiagnosis. 5. Rapid surgery and low infection rate: McMurdo can save more than half of the surgery time compared with open surgery. Intraoperative residual wireless head, avoid foreign body reaction, and small incision, infection rate is very low. Fibroadenoma of the breast Fibroadenoma of the breast is the most common benign tumor among breast diseases, which can occur at any age after puberty, mostly between the ages of 18-25. Its occurrence is related to estrogen stimulation. It is usually solitary, but in a few cases it is multiple and can occur both unilaterally and bilaterally, and rarely becomes malignant. They are usually round or ovoid, and in large cases may be lobulated. The main clinical manifestation is a breast lump with a smooth surface, firm texture, clear borders, good mobility, and generally not associated with pain. The main methods of examination are physical examination, ultrasound and mammography. Once a fibroadenoma is formed, medication is ineffective and the only way is to remove it surgically. However, not all fibroadenomas must be removed, and those with small masses (less than 1 cm) that are not considered malignant and are growing slowly can be observed and followed up. Surgical methods: ① Traditional open surgery: for clinically palpable fibroadenomas and tumors that are considered malignant, the incision is usually 3-5 cm and the scar is obvious. The advantages are low cost, low surgical difficulty, no need for auxiliary equipment, and all hospitals at all levels can complete the surgery. ②McMurdo minimally invasive rotational surgery: It is suitable for fibroadenomas under 2.5 cm and small fibroadenomas with large breast volume that are not clinically accessible. McMerton minimally invasive surgery has a quick recovery after surgery, with incisions of 3-5 mm, no sutures required and less likely to form scars.