22P - Clinical outcomes after skin-sparing or nipple areolar complex-sparing mastectomy with sentinel lymph node biopsy in early breast cancer patients

Background

The purpose of this study was to evaluate the characteristics and outcomes of early breast cancer patients who underwent skin-sparing mastectomy or nipple areolar complex-sparing mastectomy with sentinel lymph node biopsy without radiotherapy.

Methods

A total 104 patients with early breast cancer who underwent mastectomy with sentinel lymph node biopsy were identified in Korea Ansan University Hospital between 2007 and 2017. 85 total mastectomies (TM), 11 nipple areolar complex-sparing mastectomies (NSM), and 8 Skin-sparing mastectomiesm (SSM) were included. All these patients did not undergo adjuvant radiotherapy on chest wall or axillary area. We divided the patients into two groups, TM group and NSM/SSM group. We retrospectively collected clinitopathologic data for these patients. Locoregional recurrence rate, distant recurrence rate, overall recurrence free survival, and overall survival were determined. All statistical analysis was performed using SPSS 20.0 software (SPSS, Inc., Chicago, IL, USA).

Results

Median follow-up was 53 months. Fifty-five percentage of TM group patients received chemotherapy and 63.7 % of NSM/SSM patients received chemotherapy. Locoregional recurrence free survival was 95.3% vs. 78.9% in TM group and NSM/SSM group (p = 0.037). Locoregional failure rate was significantly high in NSM/SSM group than TM group. Distant recurrence free survival was 97.6% vs. 89.5% in TM group and NSM/SSM group (p = 0.128). Overall recurrence free survival was 92.9% vs. 78.9% in TM group and NSM/SSM group (p = 0.118). Overall survival was 98.8% and 94.7% in TM group and NSM/SSM group (p = 0.289). Total two deaths were observed in enrolled patients, one in TM group and another in NSM/SSM group. One death in TM group was unrelated to breast cancer and cause of death was complication from end-stage renal disease. One death in NSM/SSM group was related to breast cancer.

Conclusions

In conclusion, early breast cancer patients who underwent total mastectomy, skin-sparing mastectomy or nipple areolar complex-sparing mastectomy with sentinel lymph node biopsy had excellent outcomes without additional axillary surgery or radiotherapy.

Clinical trial identification

Editorial acknowledgement

Legal entity responsible for the study

The authors.

Funding

Has not received any funding.

Disclosure

All authors have declared no conflicts of interest.