(1) Preserving most of the breast can improve the quality of life, improve the function of the affected upper limb, and reduce surgical complications.

(2) The same long-term survival rate as the "traditional" method of modified radical surgery can be obtained.

(3) After breast-conserving treatment, the recurrence rate in the affected breast is basically the same as that of "traditional" surgery.

(4) If recurrence occurs in the affected breast after breast-conserving treatment, salvage mastectomy can still be performed to achieve a survival rate similar to that of general modified radical mastectomy.