Table 1 Patient demographics and characteristics of the original breast lesions seen on the pre-Mammotome® procedure ultrasound: For all cases (n = 304), for cases in which an attempt to completely excise the breast lesion was made (n = 235), and for cases in which only diagnostic tissue sampling of the breast lesion was undertaken (n = 69)
All cases (n = 304) | Attempted lesion excision (n = 235) | Only diagnostic lesion sampling (n = 69) | P-value | |
|---|---|---|---|---|
Age (years) | 47 (18–87) | 44 (18–87) | 53 (22–84) | < 0.001 |
Gender | 0.539 | |||
Female | 301 (99%) | 233 (99%) | 68 (99%) | |
Male | 3 (1%) | 2 (1%) | 1 (1%) | |
Breast | 0.158 | |||
Right | 136 (45%) | 100 (43%) | 36 (52%) | |
Left | 168 (55%) | 135 (57%) | 33 (48%) | |
Palpable tumor | 0.057 | |||
Yes | 150 (49%) | 109 (46%) | 41 (59%) | |
No | 154 (51%) | 126 (54%) | 28 (41%) | |
Lesion location | 0.185 | |||
UOQ | 160 (53%) | 124 (53%) | 36 (52%) | |
UIQ | 63 (21%) | 45 (19%) | 18 (26%) | |
LOQ | 50 (16%) | 44 (19%) | 6 (9%) | |
LIQ | 24 (8%) | 18 (8%) | 6 (9%) | |
Subareolar | 7 (2%) | 4 (2%) | 3 (4%) | |
BI-RADS classification of ultrasound | < 0.001 | |||
Category 3 | 55 (18%) | 49 (21%) | 6 (9%) | |
Category 4 | 231 (76%) | 179 (76%) | 52 (75%) | |
Category 5 | 18 (6%) | 7 (3%) | 11 (16%) | |
Was the ultrasound lesion also visible on pre-procedural mammogram? | 0.251 | |||
Yes | 190 (63%) | 141 (60%) | 49 (71%) | |
No | 58 (19%) | 48 (20%) | 10 (15%) | |
Pre-procedural mammogram not done | 56 (18%) | 46 (20%) | 10 (15%) | |
Original ultrasound lesion measurements | ||||
Dimension 1 (cm) | 1.14 (0.33–5.53) | 1.10 (0.33–3.12) | 1.24 (0.50–5.53) | 0.004 |
Dimension 2 (cm) | 0.99 (0.24–3.74) | 0.95 (0.24–2.52) | 1.01 (0.40–3.74) | 0.013 |
Dimension 3 (cm) | 0.66 (0.22–1.80) | 0.62 (0.22–1.70) | 0.87 (0.30–1.80) | < 0.001 |
Volume of lesion (cubic cm) | 0.38 (0.01–9.64) | 0.35 (0.01–4.36) | 0.63 (0.04–9.64) | < 0.001 |