Table 3.

Response to Neoadjuvant Letrozole by Clinical and Radiologic Criteria

	Clinical RECIST (n = 100*)		Clinical WHO (n = 83*)		Ultrasonography RECIST (n = 77*)		Local mammography RECIST (n = 56*)		Central mammography RECIST (n = 63†)
Response	n	%	n	%	n	%	n	%	n	%
CR	13	13	11	13	3	4	5	9	0	0
PR	49	49	43	52	26	34	16	29	22	34
SD	26	26	16	19	42	54	26	46	40	64
PD	12	12	13	16	6	8	9	16	1	2

^*Number of patients with adequate source data for calculation of response.

^†Number of patients with pre- and posttreatment mammograms reviewed centrally.

CR, complete response; PD, progressive disease; PR, partial response; RECIST, Response Evaluation Criteria in Solid Tumors; SD, stable disease.