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Egyptian Journal of Radiology and Nuclear Medicine

Table 6 Mammography and ultrasound features of included cases

From: Interval breast cancer: radiological surveillance in screening Egyptian population

Feature

True interval breast cancer

Missed carcinoma

Mammography

Ultrasound

Mammography

Ultrasound

Typical mass*

32

62

50

72

Atypical mass**

15

15

10

10

No mass detected

41

11

37

17

Parenchymal distortion

9

–

5

8

Asymmetries

30

–

18

–

      Asymmetry

2

 

2

–

      Focal

12

–

9

–

      Developing

14

–

6

–

      Global

2

–

1

–

Pathological microcalcifications***

30

–

48

–

Diffuse edema

2

2

1

1

Skin thickening

5

5

2

2

Skin retraction

4

4

0

0

Nipple retraction

10

10

5

5

Pathological Lymph node****

10

30

3

16

  1. *Typical malignant mass lesions are considered when masses showed spiculated outlines, with marked surrounding distortion +/− clustered microcalcifcations
  2. **Atypical mass lesions in the true interval cancer included 12 well-circumscribed (oval/round) and 1 intra-cystic and 2 intra-ductal carcinomas, while in the missed cancers included 8 well-circumscribed (oval/round) and 2 intra-cystic masses
  3. ***Pathological microcalcifcations considered when showing suspicious morphology and distribution were associated with the typical mass/asymmetry or distortion
  4. ****Pathological Lymph node considered if shows globular configuration, focal cortical thickening associated with muffled/effaced hila
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