However, for early stage breast cancer, the use of modified radical surgery not only affects the appearance, but also is suspected of over-treatment; the use of breast-conserving surgery may increase the rate of local recurrence, such as intraductal cancer with intra-ductal spread and multicentric and multifocal breast cancer with small lesions. At the same time, if breast-conserving surgery is used for early-stage breast cancer with small breasts, the asymmetry of both breasts will affect the postoperative aesthetics. As a result, minimally invasive lumpectomy, which represents this requirement, has emerged as the most advanced surgical method in the 21st century. In recent years, the application of breast lumpectomy technology in breast surgery has flourished, and it has evolved from the initial lumpectomy of giant fibroadenoma, NSM subcutaneous mastectomy, and axillary anterior lymph node biopsy to the current full lumpectomy for modified radical treatment of breast cancer and breast reconstruction. It can be said that it has involved 90% of the procedures in breast surgery. Currently, breast lumpectomy technology has matured and has corresponding technical specifications and a complete theoretical basis. It has solved and improved some of the difficult problems of breast surgery, making breast surgery technology leap forward another generation to the 4th generation. Recently, our breast department under the leadership of Dr. Yao Chengcai, the leader of the discipline, has carried out this type of surgery, which was well received by patients. Patient 1, a 44-year-old female, was admitted to the hospital with bilateral breast masses. After biopsy of the masses, the pathology suggested severe atypical ductal hyperplasia, and the patient strongly requested preventive excision of both mammary glands due to mental stress. Deputy Director Yao Chengcai combined the patient’s medical history, pathological results and personal wishes, and finally suggested the patient to undergo lumpectomy with simple subcutaneous mastectomy with preservation of the nipple areola, aiming to treat the patient’s disease on the basis of ensuring the patient’s appearance as much as possible. The procedure went smoothly with minimal intraoperative bleeding, and the patient recovered well after surgery without complications such as subcutaneous emphysema, skin flap necrosis, nipple areola necrosis, or bleeding. Patient 2, female, 48 years old, was admitted to the hospital for finding a left breast mass, which was located at 100px of the nipple at 3 o’clock position, with a size of about 37.5px. The pathology after biopsy suggested invasive ductal carcinoma, and the patient had breast-conserving indications. The procedure went smoothly and the patient recovered well after surgery. The drainage tube was removed 5 days after surgery and no postoperative complications occurred. Patient 3, female, 52 years old, came to our hospital with a diagnosis of breast cancer from a foreign hospital. The procedure was uneventful and the postoperative recovery was good with no associated complications. Patient 4, female, 27 years old, had artificial fat (Omnidene) breast augmentation for 15 years and had breast deformation for more than 3 years and requested removal of Omnidene. The patient is from Chongqing and came to Guangzhou specially for surgery, but after looking for many big hospitals in Guangzhou, all of them had to operate and there was no minimally invasive surgery. The patient saw Dr. Yao’s report about minimally invasive lumpectomy for removal of Omniderm in the newspaper and came to our hospital quickly. Dr. Yao carefully reviewed the patient’s breast ultrasound and MRI, and confirmed that 98% of the omegadine was located in the posterior space of the breast, and very little was scattered in the glands and other parts. The whole operation was performed under direct lumpectomy, and the operation was completely clean, with a smooth procedure and good postoperative recovery.