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 |
UOQ, upper outer quadrant; LOQ, lower outer quadrant; UIQ, upper inner quadrant; LIQ, lower inner quadrant; BI-RADS, breast imaging reporting and data system