4.1.1　Indication

The indication of simple mastectomy is：breast retention surgery has been dia gnosed parallel breast cancer，but the final pathology shows that the patient seticpositive，the patient who relapses locally after breast preservation surgery，breast in situ cancer.Early breast cancer early-stage dipping and early breast cancer，such as early breast cancer and outpost lymph nodes without metastasis，breast malignant leafy tumors，breast sarcoma，etc.Are also suitable for palliative excision of patients who have breast cancer root surgery but cannot tolerate larger surgery and advanced breast cancer for other reasons.(https://www.daowen.com)