Bird fancier lung

Last revised by Dr Ian Bickle on 15 Apr 2021

Bird fancier lung refers to a type of hypersensitivity pneumonitis occurring as a response to avian antigens (usually inhaled proteins in the dust of bird feathers and droppings). 

For a broad discussion on this entity, please refer to the main article on hypersensitivity pneumonitis.

Radiographic features

CT

HRCT chest features can differ depending on whether it is acute, subacute or chronic presentation, but, in general, can be similar to other forms of hypersensitivity pneumonitis.

Described CT features include 6:

Treatment and prognosis

Cessation of avian exposure is a key part of management. Most cases have a good prognosis following cessation.

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Cases and figures

  • Case 1: Acute on chronic
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  • Case 2
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  • Case 3: chronic
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