Non-lactating mastitis lumps that don’t go away can be due to mastitis scarring, plasma cell mastitis, and other causes. If a woman’s mastitis forms an abscess, the scar that forms after treatment is a hard lump in the breast area. This scarring is divided into the formation period and the repair period, especially for the lumps formed after the treatment of mastitis, the recovery period may reach half a year or one or two years, so the lumps after mastitis treatment may not dissipate for several months. Plasma cell mastitis is an autoimmune disease, and the presence of localized lumps is not only due to inflammatory factors, but also due to autoimmune factors. It is recommended to consult the hospital and standardize the examination and treatment. In addition, non-lactating mastitis lumps do not go away may also be the inflammation is not cured, need to be surgical treatment.