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Features

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Clinical features include:

  • dyspnoea
  • cyanosis
  • clubbing
  • there may be slightly reduced chest expansion
  • there may be bronchial breathing
  • on auscultation there may be late-inspiratory and paninspiratory crackles heard over the affected lung lobules
  • there may be clinical features of an associated connective tissue disease

Lung function tests:

  • ratio of FEV1 to vital capacity is not reduced (contrasts with reduced FEV1/FVC that occurs in airways obstruction)
  • lung compliance is reduced in diffuse pulmonary fibrosis

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