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Table 7 Tumor staging before and after letrozole treatment (Safety population (N = 32), number and percentage of patients)

From: Neoadjuvant letrozole in postmenopausal estrogen and/or progesterone receptor positive breast cancer: A phase IIb/III trial to investigate optimal duration of preoperative endocrine therapy

Clinical stage

Baseline

Individual End

T1a

--

1 (3.1%)

T1b

--

1 (3.1%)

T1c

--

7 (21.9%)

T2

23 (71.9%)

19 (59.4%)

T3

5 (15.6%)

--

T4a

1 (3.1%)

--

T4b

3 (9.4%)

--

Missing

--

4 (12.5%)