CTICasesObliterative Bronchiolitis from Chlorine Gas Inhalation
Imaging findings
CT chest shows diffuse, severe air trapping, geographic mosaic attenuation, and bronchial wall thickening. The patient had a history of acute inhalation injury from mixing bleach and acid cleaning agents (generating chlorine gas).
Key takeaways
Inhalation of toxic gases (like chlorine, ammonia, or nitrogen dioxide) causes acute chemical bronchiolitis that can progress to irreversible obliterative bronchiolitis. High-resolution CT shows characteristic mosaic perfusion and air trapping on expiratory scans.
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