Are baseline ultrasound and mammographic features associated with rates of pathological completes response in patients receiving neoadjuvant chemotherapy for breast cancer?

The absence of shadowing and spiculation remained highly significant predictors of pCR on univariate analysis of the HER-2 positive group, in addition to small ultrasound size (AUC = 0.713, p < 0.001) (Fig. 2) and absence of microcalcification (29 of 74; 39% vs. 17 of 80; 21% p < 0.02) (Table 2 ).

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