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Table 1 Demographic characteristics of study participants

From: High mammographic density is associated with an increase in stromal collagen and immune cells within the mammary epithelium

Selected characteristics

Number or mean

Age at surgery

Mean 43 yr (range 31–59 yr)

BI-RADS category

 
 

4

11

 

3

16

 

2

10

 

1

4

Risk factors

 
 

BRCA−, strong family history

9

 

BRCA1+

15

 

BRCA2+

13

 

Past history of BC or DCIS

24

Menopausal status

 
 

Premenopausal

28

 

Perimenopausal

5

 

Postmenopausal

8

Parity

 
 

Parous

37

 

Nulliparous

4

  1. BI-RADS score 1: predominantly fat, 2: scattered fibroglandular densities, 3: heterogeneously dense, 4: extremely dense.
  2. Abbreviations: BC breast cancer, BI-RADS Breast Imaging-Reporting and Data System, DCIS ductal carcinoma in situ, IDC invasive ductal carcinoma.