EBRO 2017

Patient, tumor and treatment characteristics by surgery type

Characteristic

Lumpectomy

Mastectomy

Final microscopic surgical margins (p = 0.003) Positive

16 (5.3)

4 (1.1)

Negative Unknown

248 (82.1) 38 (12.6)

272 (77.1) 73 (20.7)

Nodal surgery

Positive lymph nodes removed (p = 0.004) 0

210 (71.9) 62 (21.2)

223 (63.4) 76 (21.6) 53 (15.1)

1 – 3

4+

20 (6.9)

Radiotherapy No

0

241 (68.3) 103 (29.2)

Yes

302 (100)

Chemotherapy (p = 0.20) No

82 (27.2) 219 (72.5)

108 (30.6) 231 (65.4)

Yes

Hormone therapy (p = 0.09) No

202 (66.9) 90 (29.8)

210 (59.5) 125 (35.4)

Yes

Tamoxifen

81 (90.0) 9 (10.0)

106 (84.8) 19 (15.2)

Other

Adjuvant therapy (p = 0. 35) Yes

254 (84.1) 48 (15.9)

287 (81.3) 66 (18.7)

No

Bilateral oophorectomy (p = 0.28) No

141 (46.7) 161 (53.3)

150 (42.5) 203 (57.5)

Yes

Prophylactic contralateral mastectomy (p <0.0001) No

256 (84.8) 44 (14.6)

214 (60.6) 134 (38.0)

Yes

Pierce et al. BCRT, 2010