Persistant Organics Pollutants (POP) accumulate in the adipose tissue (AT) and could modulate tumor progression as part of the microenvironment. The investigators tested the hypothesis that POPs exposure may be associated with breast cancer metastasis analyzing the concentrations of 46 POPs in both adipose tissue and serum samples from breast tumor patients (benign, malignant with and without lymph node metastasis)
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Metastatic lymph node status based of persistant organic pollutants level measured by by gas chromatography coupled to high-resolution mass spectrometry.
Timeframe: Sampling the day of surgery