Table 6. Correlation of BI-RADS categories to B-categories for all biopsies.

BI-RADS vs. B-categories	B2 (42.2%)		B3 (4.5%)		B5a (5.7%)		B5b (47.6%)		Total
	No.	%	No.	%	No.	%	No.	%	No.	%
4a	504	58.9	43	47.3	13	11.3	32	3.3	592	29.2
4b	329	38.4	37	40.7	70	60.9	323	33.4	759	37.4
4c	9	1.1	3	3.3	19	16.5	105	10.9	136	6.7
5	13	1.5	8	8.8	13	11.3	503	52.0	537	26.5
6	1	0.1	0	0.0	0	0.0	4	0.4	5	0.2
Total	856		91		115		967		2029