BCT yields favorable outcomes for the large majority of patients, although increased LR was observed among those with non-luminal-A subtypes, younger age, and increasing lymph node involvement. Risk factors for LR after BCT appear to be converging with those after mastectomy in the current era.

The human gut microbiome partakes in a bidirectional communication pathway with the central nervous system (CNS), named the microbiota-gut-brain axis.The microbiota-gut-brain axis is believed to modulate various central processes through the vagus nerve as well as production of microbial metabolites and immune mediators which trigger changes in neurotransmission, neuroinflammation, and behavior. Little is understood about the utilization of microbiome manipulation to treat disease. Though studies exploring the role of the microbiome in various disease processes have shown promise, mechanisms remain unclear and evidence-based treatments for most illnesses have not yet been developed. The animal studies reviewed here offer an excellent array of basic science research that Enhanced Digital Features To view enhanced digital features for this article go to https://doi.org/10.6084/ m9.figshare.11865615. A. Capuco

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Our findings suggest that LR is associated with younger age, nodal involvement, and biologic subtype but not with residual disease at reexcision. The study's power is limited by the low incidence of LR despite detailed clinical data and long-term follow-up. Further study is required.