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Table 1 Summary (frequency and percentage) of HRCT thoracic findings

From: Value of HRCT of the chest in evaluation of ankylosing spondylitis: correlation between pleuro-parenchymal abnormalities and disease activity

HRCT thoracic finding

Frequency

Percentage

Summary of HRCT thoracic findings in our study

  

Upper lobe fibrotic changes

9

30.0

Middle lobe fibrotic changes

9

30.0

Lower lobe fibrotic changes

20

66.7

Emphysema

3

10.0

Lung cysts

2

6.7

bronchial thickening

13

43.3

Lung nodules

6

20.0

Air trapping

2

6.7

Lung hyperlucency and hyperinflation

15

50.0

Pulmonary artery dilatation

0

0.0

Pleura thickening

6

20.0

Pleural effusion

0

0.0

Mild pericardial thickening

1

3.3

Other findings

  

Kyphosis

12

40

Facetal ankylosis

23

76.6

Squaring of vertebrae

7

23.3

Ligamentous ossification

7

23.3

Chalk stalk fracture

2

6.7

Fatty atrophy of back muscles

9

30