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Acute phase

  • pulmonary oedema
  • normal vascular pedicle
  • no cardiomegaly or upper lobe blood diversion
  • when pulmonary vessels can be distinguished they are often constricted
  • septal lines usually absent because capillary leak occurs directly into alveolar spaces (cf cardiogenic pulmonary oedema)

Subacute phase

  • progressive lung destruction and transition from alveolar to interstitial opacities

Chronic phase

  • fibrosis
  • focal emphysema

©Charles Gomersall, April, 2014 unless otherwise stated. The author, editor and The Chinese University of Hong Kong take no responsibility for any adverse event resulting from the use of this webpage.
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