Presentation
Hypoxia. ? Asthma. Response to steroid therapy. A chest radiograph is performed.
Patient Data
Age: 12 years
Gender: Female
From the case:
Hypersensitivity pneumonitis
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Subtle perihilar alveolar infiltrate.
From the case:
Hypersensitivity pneumonitis
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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.