Table 3 Flat epithelial atypia alone on core biopsy with carcinoma on excision

From: Management of flat epithelial atypia on breast core biopsy may be individualized based on correlation with imaging studies

Diagnosis

Size (mm)

Grade

Estrogen receptor

BIRADS

Indication

Calcs removed

IDC (NST)

3

1

Positive

4

10 mm calcs

<25%

IDC (tubular)

3

1

Positive

4

6 mm calcs

>75%

DCIS

8

2

Positive

4

12 mm calcs

>75%

DCIS

52

2

NR

4

40 mm calcs

<25%

DCIS

38

2

Positive

4

23 mm density

N/A

  1. Abbreviations: Calcs, calcifications; DCIS, ductal carcinoma in situ; IDC, invasive ductal carcinoma; NST, no special type.
  2. Of the five cases upgraded to carcinoma, two were invasive carcinomas measuring 3 mm each and three were intermediate-grade ductal carcinoma in situ. The two cases of ductal carcinoma in situ with available estrogen receptor immunohistochemistry results were estrogen receptor positive.
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