Table 4.

False-Positive Lesions Detected by the Various Modalities and the Portion of These Lesions Representing Atypical Ductal Hyperplasia

Screening Modality	False-Positive Lesions		Atypical Ductal Hyperplasia
	No.	%	No.	%
Total	166	100	49	100
Ultrasound	41	34.7	8	16.3
Mammography	38	22.9	12	24.5
Magnetic resonance imaging	147*	88.6	46*	93.9

^*P < .001 for comparison of magnetic resonance imaging with other modalities.