Table 3.
Surgical treatment according to the results of magnetic resonance imaging (MRI)
| MRI results | n | Lumpectomy | Ipsilateral mastectomy | Bilateral mastectomy |
|---|---|---|---|---|
| No MRI |
817 |
62% |
26% |
12% |
| MRI |
|
|
|
|
| Normal |
259 |
66% |
17%c |
16% |
| Abnormal |
|
|
|
|
| Ipsilateral |
182 |
51%c |
34%c |
15% |
| Contralateral |
73 |
53% |
21% |
26%c |
| Both |
114 |
46%c |
23% |
31%c |
| MRI biopsya |
|
|
|
|
| None |
132 |
39%c |
35%c |
26%c |
| Benign |
184 |
66% |
21% |
13% |
| Malignant |
|
|
|
|
| Ipsilateralb |
52 |
35%c |
38%c |
27%c |
| Contralateral |
15 |
33%c |
0c |
67%c |
| Both | 6 | 0c | 0 | 100%c |
aFor those with abnormal MRI.
bIn addition to index lesion.
cP<0.05 compared with the rate for the same surgery with no MRI.