Medical oncology
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To investigate the possible correlation between expression of HER2 and vascular endothelial growth factor (VEGF), and to determine the predictive value of these factors in patients receiving adjuvant endocrine therapy including the group with a breast cancer (BC) positive for both oestrogen receptor (ER) and progesterone receptor (PgR). ⋯ The results from this retrospective analysis suggest that overexpression of HER2 and higher VEGF expression may add information on patient's outcome after adjuvant endocrine therapy in ER and PgR positive BC.