Table III.

Additional Imaging, Additional Biopsies, and Primary Surgical Treatment in Relation to Preoperative MRI for Women with an Interval Cancer or Screen-detected Cancer

	Interval Cancer Diagnosis				Screen-detected Cancer Diagnosis
	MRI (N=43; 21.3%)		No MRI (161; 78.9%)		MRI (N=162; 12.9%)		No MRI (N=1092; 87.1%)
	N	%	N	%	N	%	N	%
Additional Imaging (Mammogram/Ultrasound)	13	30.2	35	21.7	67	41.4	309	28.3
Additional Biopsies	SCSα	SCS	95	59.0	150	92.6	725	66.4
Primary Surgical Treatment
Breast conserving surgery	26	60.5	95	59.8	120	74.5	852	78.2
Mastectomy	17	39.5	64	40.3	41	25.5	237	21.8

^αSCS: Small cell size.