Plasmacytoid mastitis is a complex disease in terms of clinical treatment and the main treatment modalities are anti-infective surgical treatment. Therefore, when a patient has plasmacytoid mastitis, the number of days of hospitalization depends on the size of the patient’s lesions and the recovery time from surgery. For patients with small lesions that can be surgically removed in a single visit, most patients will be discharged in 5-7 days. For patients with large lesions and severe infections, a longer stay of up to a month may be required. Since plasmacytosis is prone to local recurrence after surgical treatment, and is associated with infection symptoms, patients may face a second or even a third surgery. The length of hospitalization for patients at this time cannot be determined. Seeing a doctor is a process of consultation and treatment and healing, and exactly how long it takes should be determined on a case-by-case basis.