CTICasesExogenous Lipoid Pneumonia
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Imaging findings
Chest radiographs demonstrate persistent, hazy, bilateral opacities, right greater than left, which were initially treated as community-acquired pneumonia. CT of the chest shows ground-glass opacity, crazy-paving, and more discrete, nodular, dependent consolidation in the lung bases.
Key takeaways
Exogenous lipoid pneumonia is caused by the aspiration or inhalation of lipid-based substances, such as mineral oil used intranasally. While classic cases show macroscopic fat-attenuation within areas of consolidation, many cases present non-specifically with ground-glass opacities, crazy-paving, and dependent consolidation, requiring detailed clinical history and bronchoalveolar lavage for diagnosis.
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