Higher Volume at Time of Breast Conserving Surgery Reduces Re-Excision in DCIS
Table 2
(a) Comparison of patients who did not require re-excision to those who underwent re-excision.
BCS
BCS-AM
TM
Re-excision
No
Yes
No
Yes
No
Yes
No. of patients
72
129
90
61
51
2
Re-excision
No
Yes
No
Yes
No
Yes
No. of patients
72
129
90
61
51
2
Necrosis
Yes
39
82
62
44
37
2
No
33
45
28
17
13
0
N/A
0
2
0
0
0
0
Calcifications
Yes
51
95
67
41
36
2
No
21
30
23
19
15
0
N/A
0
4
0
0
0
0
Multifocality
Yes
36
74
53
48
34
1
No
36
50
37
13
17
1
N/A
0
4
0
0
0
0
ER
71–100%
40
72
50
34
21
0
41–70%
2
6
7
3
2
0
11–40%
3
2
1
1
3
0
0–10%
7
20
11
14
16
2
N/A
20
22
21
9
9
0
PR
71–100%
8
13
10
5
7
0
41–70%
7
8
6
7
5
0
11–40%
2
22
8
8
5
0
0–10%
35
57
44
32
25
2
N/A
20
22
22
9
9
0
ER/PR
Both 71–100%
8
16
10
8
8
0
Both 0–10%
7
16
11
14
15
2
(b) Statistical significance of predictors for re-excision.
Parameter
Prob > Chi Sq
BCS
*<.0001
Multifocal
*.0002
Total volume
*.0284
ER
*.0382
Necrosis
.5300
PR
.9952
Calcifications
.8007
*Significant predictor of re-excision. The P values of the chi-squared test show the significance of each parameter as a predictor of the response variable, rate of re-excision surgery. If the P value is less than .05, then the parameter is considered significant and is a good predictor in the model for re-excision.
