I. Overview Young women aged 20 to 25 years old have the most frequent occurrence of breast fibroadenoma (mastofibroma), and it is common to have a single occurrence, but one breast may also show multiple fibroadenoma growth. The occurrence of fibroadenoma is closely related to the stimulation of estrogen, but rarely occurs before menstruation or after menopause. The clinical manifestation of fibroadenoma is usually found in the upper outer quadrant of the breast. It seems to be ovoid; some are like cherry size, some are egg size, and can develop into huge fibroadenoma. The surface of the tumor is smooth, but hard, the boundary of the tumor is clear, and there is no adhesion with the skin and the surrounding tissues, the tumor can be easily pushed in the breast, and there is a sliding sensation when touched. There is no enlargement of axillary lymph nodes. Tumor growth is slow. It may not change for several years; it may increase rapidly during pregnancy or lactation under the effect of progesterone, and the pain is very mild or no pain. 2.Pathology: Fibroadenoma has envelope outside, and the cut surface is grayish white, bright and not very smooth, many unevenly arranged fissures and dilated milk ducts can be seen with bare eyes. Although the possibility of fibroadenoma becoming cancerous is small, there is still a possibility of sarcoma becoming, so surgery should be performed. 3.Surgery is performed under local anesthesia (usually 1%-2% lidocaine, without epinephrine), and a radial incision is made. For larger tumors, especially those located in the lower part of the breast, an arch-shaped incision should be made at the lower edge of the breast. Pre-operative preparation Fibroids are relatively easy to remove and no special treatment is required to exclude contraindications to surgery. The surgery is strictly aseptic, and the skin and subcutaneous tissues are incised along the outside of anesthesia up to the fibroid envelope. After cutting the skin and subcutaneous tissues, the breast ducts are separated and cut between the ducts to reach the tumor envelope, which can be easily removed by lightly clamping it with skin forceps and opening and expanding the incision. During the operation, try not to destroy the normal ducts of the breast. As long as the operation is done carefully and patiently, the normal ducts are separated layer by layer, and no blood is lost during the operation. After the fibroadenoma is removed, it is then closed and sutured without leaving a dead cavity to prevent postoperative exudation of fluid, formation of cysts only, or secondary infection into an abscess cavity. At the same time, the sutures are directly closed according to anatomy, and the skin sutures are removed in 7 to 10 days. The wound is covered with sterile gauze for protection for 1 week. Fourth, postoperative treatment Excision of fibroadenoma, as long as the operation is strictly aseptic, postoperative drug administration by intravenous or intramuscular injection is not required. For those who have infection, postoperative treatment with antibiotics for 1 week. For those without infection, prophylactic oral administration is sufficient. At the same time with antibiotics, increase the dosage of vitamin C, each V administration 3 to 4g, oral 0.4 to 0.6g, has the effect of improving the immunity of the body. After the operation, pay attention to the wound dressing change, the surgery is strictly no infection in general, those who have increased throbbing pain should be highly alert to the possibility of wound infection and septicemia.