Must I have surgery for plasmacytoid mastitis? Plasmacytoid mastitis, ductal dilatation of the breast. It is called acantholytic canker sores in Chinese medicine and is most commonly seen in non-lactating and post-menopausal women. The clinical features are: 1. It is often accompanied by nipple invagination and abnormal milk duct development. 2. Pimple-like overflow from the nipple. In the acute phase, there is a red, swollen, hot and poorly defined mass around the nipple areola. 4. In the chronic stage, there is mostly fistula formation, and it is said to be repeatedly prolonged, and the patient is more painful. The rapid onset, irregularity of the lump and the long duration of the disease make it easy to be misdiagnosed as breast cancer. Patients and even non-specialists often do not know enough about this disease. Some physicians believe that only surgical excision of the lesion can treat plasmacytoid mastitis, but the fistula does not heal for a long time after surgery, and in some patients, the wound does not heal here, and the lesion develops again elsewhere, which is very painful for patients. In order to reduce the chance of recurrence, the physician has to remove as many mammary glands as possible, and the patient’s breast is severely disfigured. Moreover, surgical excision alone does not change the abnormally dilated state of the breast ducts, so even if a total mastectomy is performed on one side of the breast, the risk of recurrence of the opposite breast remains, which is a great psychological burden for the patient. If the treatment does not effectively improve the state of abnormal secretion of the breast ducts, i.e., does not improve the underlying cause of plasmacytoid mastitis, the local treatment only has the effect of removing the single lesion and has no effect on the prevention of recurrence and reoccurrence. On the contrary, if the pathological state of the disease can be effectively improved, not only can the swelling dissipate as soon as possible, the abscess can be healed, but also recurrence can be prevented, and the pain of surgery can be eliminated. The Department of Mammary Gland uses Chinese herbal medicine to treat plasmacytoid mastitis internally and externally, and the results are very good. Our clinical observation is that the proportion of patients requiring surgery is only 5-10%, and most patients can be completely cured by Chinese medicine treatment. Even for patients who are operated, it is recommended to combine with herbal treatment to prevent recurrence after surgery.