EBRO 2017

Patient, tumor and treatment characteristics by surgery type

Characteristic

Lumpectomy

Mastectomy

Frequency, n

302

353

Patient age at biopsy, years (p = 0.13) Median

40.5

41.9

Menopausal status at primary (p = 0.003) Pre-

240 (79.5) 52 (17.2)

240 (68.0) 89 (25.2)

Post- Peri-

10 (3.3)

24 (6.8)

BRCA gene mutation (p = 0.01) 1

197 (65.2) 105 (34.8)

197 (55.8) 156 (44.2)

2

Histology (p = 0.07)

Infiltrating ductal

258 (85.4) 10 (3.3) 34 (11.2)

292 (82.7)

Lobular or Infiltrating ductal & lobular

26 (7.4) 35 (9.9)

Medullary or other

Pathologic T-stage (p = 0.001) T0/T1

214 (70.8) 81 (26.8)

203 (57.5) 125 (35.4)

T2 T3

4 (1.3)

16 (4.5)

Estrogen receptor (p = 0.006) Positive

90 (29.8) 154 (51.0) 54 (17.9)

126 (35.7) 131 (37.1) 93 (26.4)

Negative Unknown

Pierce et al. BCRT, 2010