Table 1.

Patient and tumor characteristics

Patient characteristics	N = 37
Median age (range)	64 yrs (42–81)
Median BMI (range)	28.3 (19.3–55.1)
Post-menopausal	31 (83.8%)
Neoadjuvant endocrine therapy
Aromatase inhibitor**	28 (75.6%)
Tamoxifen	9 (24.4%)
Surgery
Lumpectomy	26 (70%)
Mastectomy	11 (30%)
Adjuvant therapy
Radiation	24 (65%)
Chemotherapy	10 (27%)
No radiation, no chemotherapy	3 (8%)
Node status at surgery
pN0	30 (81%)
pN1	7 (19%)
Tumor characteristics	N = 38*
Median clinical tumor size (range)	1.3 cm (0.5–7.7)
Median tumor size at surgery (range)	1.2 cm (0.09–4)
Histology
Invasive ductal	26 (68%)
Invasive lobular	12 (32%)
ER/PR status
ER+/PR+	32 (84%)
ER+ /PR−	6 (16%)
Tumor grade
1	16 (43.2%)
2	18 (47.4%)
3	4 (10.5%)

^*One patient multifocal disease (two HR+ foci with distinct histology)

^**One patient treated with aromatase inhibitor and GnRH analog