CTICasesChronic Hypersensitivity Pneumonitis (Pigeon Breeder's Lung) with Air Trapping
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Imaging findings
Architectural distortion with subpleural bronchiectasis, peripheral reticular opacities, and peribronchiolar/bronchocentric process, predominantly in the upper lobes to mid-lungs. No classic honeycombing. Expiration CT showed lobular areas of air trapping.
Key takeaways
Another clear example of chronic hypersensitivity pneumonitis in a pigeon breeder, showing characteristic features including air trapping on expiration views. The hypersensitivity panel was believed to be positive for relevant antigens.
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