A Prospective Evaluation of the Peri-operative Hypoxia in Breast Cancer

The changing pattern of gene expression during surgery has never been studied. This could be an effect of acute hypoxia that sets in the tumour during surgery or could be a surgical response. To study these changes happening in the tumour during surgery, we are taking serial biopsies during surgery, one at the beginning, one midway during surgery and one at the end of surgery. These samples will be snap frozen and stored at -80 deg celsius in biorepository for future analysis.