Table 3 Past breast surgical or biopsy history of the three patient populations: DCIS, DCIS-Mi, and IDC

Total number

73

72

721

Past breast surgical or biopsy history

19 (26.0)

20 (27.8)

176 (24.4)

0.795

 Benign

  Fibrosis

2 (10.5)

4 (20)

29 (16.5)

0.700

  Cysts

3 (15.8)

2 (10)

23 (13.1)

0.864

  Apocrine metaplasia

1 (5.3)

1 (5.0)

5 (2.8)

0.789

  Fibroadenoma

1 (5.3)

1 (5.0)

6 (3.4)

0.885

  Lobular hyperplasia without atypia

8 (42.1)

6 (30.0)

64 (37.2)

0.728

  Sclerosing adenosis

0 (0)

0 (0)

1 (0.5)

  Papilloma

1 (5.3)

2 (10.0)

9 (5.2)

0.724

  Atypical ductal hyperplasia

1 (5.3)

2 (10.0)

10 (5.8)

0.780

  Atypical lobular hyperplasia

3 (15.8)

2 (10.0)

28 (16.3)

0.743

Malignant

  IDC

  Invasive lobular carcinoma

0

0

0

  Invasive mucinous carcinoma

0

0

0

  Invasive tubular carcinoma

0

0

0

  DCIS

0

0

1