CTICasesAnhydrous Ammonia Inhalation Injury
Imaging findings
Initial chest CT shows dense consolidative abnormalities and airway damage predominantly involving the right upper lobe, accompanied by airway wall thickening and patchy mosaic attenuation. A follow-up scan obtained one month later shows resolution of the dense upper lobe ground-glass opacities, persistent airway disease, and residual mosaic attenuation suggesting air trapping.
Key takeaways
Inhalation of anhydrous ammonia fumes, particularly during illicit methamphetamine manufacturing, can lead to acute chemical pneumonitis and severe airway damage. Inhaled irritants tend to preferentially injure the right upper lobe compared to the left, resulting in long-term reactive airways disease and air trapping.
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