Table 2.

Association between BPE and recurrence

	Recurrence-free (n = 138)	Recurrence (n = 49)	p value
Baseline BPE	2.53 ± 0.87	2.59 ± 0.89	0.6871
Post-NAC BPE	1.49 ± 0.64	1.59 ± 0.57	0.3113
Change in BPE	1.04 ± 1.01	1 ± 0.89	0.7881

BPE, background parenchymal enhancement; NAC, neoadjuvant chemotherapy.