Bat wing pulmonary opacities

Bat's wing or butterfly pulmonary opacities refer to a pattern of bilateral perihilar shadowing. It is classically described on a frontal chest radiograph but can also refer to appearances on chest CT 3-4.

Differential diagnosis

Bat's wing pulmonary opacities can be caused by:

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Article Information

rID: 972
Systems: Chest, Oncology
Sections: Signs, Gamuts
Synonyms or Alternate Spellings:
  • Bat wing opacity
  • Bat wing pulmonary opacities
  • Bat's wing opacity
  • Bat's wing pulmonary opacity
  • Batwing pulmonary opacities
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    Fruit bat
    Figure 1: fruit bat
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    Pulmonary oedema
    Case 1: pulmonary oedema
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    Case 2: pulmonary haemorrhage
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    Case 3: pulmonary oedema
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