Hypersensitivity pneumonitis

Case contributed by Dr Yi-Jin Kuok


Hypoxia. ? Asthma. Response to steroid therapy. A chest radiograph is performed.

Patient Data

Age: 12 years
Gender: Female

Subtle perihilar alveolar infiltrate.


Perihilar ground glass changes

Poor expiratory effort reveals peripheral gas trapping

Case Discussion

Further history reveals the patient slept near her pet parrot. 

Learning point: hypersensitivity pneumonitis can mimic asthma (clinically, not radiologically) and the patient improves with steroid therapy.

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Case information

rID: 17192
Published: 25th Mar 2012
Last edited: 13th Aug 2019
Inclusion in quiz mode: Included

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