Table 2 Characteristics of the 30 participants with breast cancer detected from screenings

From: A multi-centre randomised trial comparing ultrasound vs mammography for screening breast cancer in high-risk Chinese women

  

Screening group

Screening round

Variable

All (%) (N=30)

MMG (N=5)

US (N=11)

MMG+US (N=14)

Initial (N=19)

1 year F/U (N=11)

Age range, years

30–39

2 (6.7)

0

1

1

2

0

40–49

18 (60.0)

3

7

8

11

7

50–65

10 (33.3)

2

3

5

6

4

Pathological diagnosis

DCIS

3 (10.0)

1

0

2

1

2

IDC

27 (90.0)

4

11

12

18

9

Tumour size

Tis (in situ)

3 (10.0)

1

0

2

1

2

T1ab (⩽1 cm)

4 (13.3)

0

1

3

2

2

T1c (1.1–2 cm)

11 (36.7)

1

3

7

5

6

T2 (2.1–5 cm)

12 (40.0)

3

7

2

11

1

Nodal status

N0 (negative)

23 (76.7)

4

9

10

13

10

N1 (1–3 pos.)

6 (20.0)

1

2

3

5

1

N2 (4–9 pos.)

1 (3.3)

0

0

1

1

0

TNM stage

0

3 (10.0)

1

0

2

1

2

I

12 (40.0)

1

4

7

5

7

IIA

11 (36.7)

2

5

4

9

2

IIB

3 (10.0)

1

2

0

3

0

IIIA

1 (3.3)

0

0

1

1

0

Risk score (Mean±s.d.)

44.6±8.1

42.2±4.8

46.1±7.2

44.3±9.8

44.2±6.6

45.4±10.6

Screening yield (per 1000)

30/(12 519 +8692)

(1.41)

5/(4170+2815)

(0.72)

11/(4214+3082)

(1.51)

14/(4135+2795)

(2.02)

19/12 519 (1.52)

11/8692 (1.27)

  1. Abbreviations: MMG=mammography; US=ultrasonography; DCIS=ductal carcinoma in situ; IDC=invasive ductal carcinoma; F/U=follow-up; TNM=tumour-node-metastasis.
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