Background: To compare the breast cancer-specific survival (BCSS) and overall survival (OS) between patients who underwent implant or tissue reconstruction after mastectomy with distant metastatic breast cancer (MBC).
Materials And Methods: Using the Surveillance, Epidemiology, and End Results database, we enrolled 371 female MBC cases diagnosed during the years 2004-2014. Patients were subdivided into implant (176) and tissue groups (195) for survival comparison between the two groups. The end points were BCSS and OS. Comparisons of the distribution of clinicopathologic characteristics were evaluated by chi-square test and Fisher exact test. Survival outcomes were compared by Kaplan-Meier model and multivariate Cox regression model for known clinicopathologic variables in both the entire population and in the reconstruction cohorts.
Results: In the entire cohort, patients with implant exhibited distinctly better BCSS (log rank, P = 0.002) and OS (log rank, P = 0.001) than patients with tissue reconstruction. Multivariate Cox regression model revealed that patients, who received prosthetic implants, were married, and progesterone receptor-positive group showed better survival rates in BCSS and OS. In addition, after stratification of the implant group and tissue groups according to clinicopathologic variables, the survival rate of patients in the implant group was higher than that in the tissue reconstruction group under the influence of factors, such as married, estrogen receptor-negative, nonradiotherapy, and chemotherapy.
Conclusions: Our study provides further survival evidence supporting the practice of mastectomy with prosthetic implant reconstruction in patients with MBC under certain conditions.
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| http://dx.doi.org/10.1016/j.jss.2019.09.057 | DOI Listing |
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