CTICasesChronic Mineral Oil Aspiration Pneumonia (Lipoid Pneumonia)
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Imaging findings
This elderly woman presented with extensive patchy lung consolidation that had been present for years, without weight loss. The key finding on CT was that the attenuation of the lung consolidation matched that of subcutaneous fat (around the same density as fat). This characteristic fat attenuation within the lung consolidation indicated the presence of mineral oil, leading to the diagnosis of chronic mineral oil aspiration pneumonia.
Key takeaways
Chronic mineral oil aspiration can lead to lipoid pneumonia, which manifests as persistent lung consolidation with characteristic fat attenuation on CT. This condition often occurs in elderly patients who regularly use mineral oil as a laxative and unknowingly aspirate it, particularly when taken just before lying down. The treatment involves discontinuing the use of mineral oil.
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