CTICasesChronic Hypersensitivity Pneumonitis
[...]. Chronic Hypersensitivity Pneumonitis. CTICases. Published April 15, 2021. https://str-case-explorer.pages.dev/c/st4b4
Imaging findings
High-resolution CT shows diffuse, central-lobular smudgy ground-glass nodules and patchy ground-glass opacity, which had been previously misdiagnosed as miliary coccidioidomycosis due to positive serology. The findings resolved/improved after removing the patient from environmental exposures and initiating corticosteroids.
Key takeaways
Anchoring bias on a single positive serologic test (e.g. coccidioidomycosis) can lead to diagnostic errors. Smudgy, poorly defined centrilobular ground-glass nodules are classic for subacute/chronic hypersensitivity pneumonitis (HP) rather than well-defined miliary fungal nodules.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Dabbing-Associated Acute Lung InjuryExposure
- CPR-Related Thoracic InjuriesTrauma
- Metastatic Malignant Uterine PEComaNeoplastic
- Type B Aortic Dissection with Patent False LumenAorta & Arteries
- CellCept-Induced Pneumatosis IntestinalisIatrogenic
- Exogenous Lipoid PneumoniaExposure
- Retroperitoneal Fibrosis and Pulmonary Fibrosis (IgG4-Related Disease)Autoimmune
- Displaced and Crumpled Aortic StentAorta & Arteries
See all cases from April 15, 2021 →
Related ILD cases
- GATA2 Deficiency with Follicular Bronchiolitis and Cystic Lung Destruction
- Anti-MDA5 ILD (Rapidly Progressive Interstitial Lung Disease)
- Radiation Pneumonitis post-SABR
- Fibrotic Hypersensitivity Pneumonitis
- Fibrotic Hypersensitivity Pneumonitis with Granulomas
- Immunotherapy-Induced Organizing Pneumonia Evolving to NSIP