Objective: To compare and analyze the prognosis of patients with early stage breast cancer with micro-metastases in the sentinel lymph nodes treated with post-mastectomy radiation therapy(PMRT)after mastectomy and without PMRT. Methods: China Biology Medicine(CBM),China National Knowledge Infrastructure(CNKI),China Science and Technology Journal Database,Wanfang database,PubMed database,Embase database,Web of science(WOS) database,and Cochrane library. The screening was independently performed by two researchers according to the inclusion and exclusion criteria,extracting data,assessing methodological quality,and analyzing results were achieved. Stata 17.0 and Review Manager 5.4 software were applied for Meta-analysis. Results: A total of nine retrospective studies were included,with a median follow-up of 30 to 98 months. Meta-analysis showed that the PMRT after mastectomy did not significantly improve the breast cancer-specific survival(BCSS)(HR=1.18,95%CI:0.94-1.48,Z=1.43,P=0.15),disease-free survival(DFS)(HR=0.51,95%CI:0.07-3.62,Z=-0.668,P=0.50),and overall survival(OS)(HR=1.02,95%CI:0.93-1.12,Z=0.39,P=0.70) in the early-stage breast cancer with sentinel lymph node micro-metastasis.Conclusion: For patients with early-stage breast cancer and micro-metastases in the sentinel lymph nodes(T0,T1-2NmiM0),PMRT after mastectomy does not improve BCSS,DFS,and OS. |
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