Item

Number

%

Intraoperative frozen section analysis of safety margins

Positive (infiltrated)

36

16.4%

Negative

183

83.6%

Intraoperative infiltrated margins (36 patients)

Medial & depth

4

1.8%

Depth & lower

1

0.5%

Lateral & lower

3

1.4%

Lower

2

0.9%

Upper

11

5.0%

Depth

2

0.9%

Medial

11

5.0%

All

2

0.9%

Intraoperative surgical decision making

No further excision

183

83.6%

Re-excision with negative further margins

29

13.2%

MRM*

4

1.8%

NSM & IBR-LDF**

3

1.4%

Paraffin pathologic results

Typical with intraoperative frozen section analysis

216

98.6%

Different

3

1.4%

Types of paraffin section analysis difference

Typical

216

98.6%

Infiltrated all margins by DCIS

2

0.9%

Infiltrated depth

1

0.5%

Final pathological types after paraffin section analysis

DCIS

2

0.9%

IDC

199

90.9%

ILC

10

4.6%

Mixed IDC & ILC

1

0.5%

Mucinous adenocarcinoma

2

0.9%

Medullary carcinoma

3

1.4%

Colloid carcinoma

2

0.9%

Pathologic grade

Not available

14

6.4%

Grade 1

7

3.2%

Grade 2

139

63.5%

Grade 3

59

26.9%